Christina, does your bf ever give reasons why he will not indulge in any form of activity with you?
One possible reason I can think of, is that he might feel it is being done for a purpose of yours that does not match him.
I mena if you're intent is intially to lose weight and he has no such problem, he might believe you have a certain type of emotional connection to it, that he couldn't get, because he would not have the same reason to want to do it as you have and if he couldn't find a reason to want it, like to have general overall improved wellness for years, thne he would see it as a pointless endeavour if he didn't understand why he was exercising in the first place.
He might even think that doing things with you and potentially a load of people physically similar to you, would make him look like the odd one out, or the fish out of water, or possibly as if he had no right to be there.
However this is not like wanting a slim person to go to something like weight watchers, to provide moral support, this is about someone being active for their own good as well as yours.
The two of you doing things together like that, could cultivate more of an emotional bond between you, but strain could still be created, if it felt like both of you were not getting enough space sometimes.
Maybe he feels him not doing any exercise, is not a case of doing things you want to do, for reasons not shared by him, but more a case of not having enough seperate "him" and "you" time.
A couple of key things to remember is, that it seems from past admissions, that he doesn't seem to resent your exercise time, like Lynne says her partner did some years ago and may possibly still do, but the other thing ot remember is that you are still worth it and his levels of acceptance shouldn't be used to devalue your own perception of your exercise needs, nor should the belief that without basing it around a group mentality, it has less significance.
Yes for some people, exercising alone can seem more emoptionally challenging or less rewarding, as opposed to group or team based pursuits, but in a group, the individual is doing it for themselvs, not you and in a team, the others are doing it to achieve a short-term goal and it's something if successful to add to a life CV, or as some say to tick off in a "life box", but your wellness is not a short-temr thing, it's for the rest of your life and beyond a group or team setting, where is the long-term motivation.
A sportsperson can potentially win multiple accolades, but what then beyond the confines of a sport, they can no longer participate at to a standard, comparable to that which allowed them to achieve accolades.
Some former sportspeople gain weight, or end up depressed, because it just stops happening. The deceased motivation and dedication to a cause happens and then there is nothing, no plan, no forward momentum and the process trying to leave behind something, that still holds a strong emotional attachment.
Some however persue wellness goals outside of sport or a team enviroment, because they acknowledge it as more than just a way to make money and achieve things.
In your case, short-term goals could provide success, but there is no monetary motivation, because you are not any sort of proffessional at a physical discipline, but the motivation comes from your future and what sort of person you want to be physiclaly in many years from now.
Team and group activities are often short-lived and they come and go, but allowing for a long future ahead of you, you won't.
I could end up old and with more issues than I would think I deserved and possibly something severe might happen and it would hurt to some extent that I tried to live right and paid for it anyway, but the worst hurt would be to suffer and never have tried to live well, knowing that I might have been able to delay or prevent some, or all of the issues I was faced with and knowing that barring miracle surguries or a truck load of prescribed drugs, to cure or manage ill(s), I would be stuck with any issues for the remainder of life.
It might not be right that you don't get as much support for your goals as you would wish for, especially from someone you are with and you are definitely not in a minority, as I've become aware of this type of behaviour before now, when people from differing walks of life, describe some or all friends or relatives, as having an apathetic, or "if I don't understand it, it must be wrong" type of mentality, to your physical wants.
Such individuals could suffer health problems in later life and they may wish they'd done something to try and prevent them and they would no doubt expect you to be there for them sometimes, to ease the emotional burden off them, even though they neglected to give proper respect and understanding in younger life, to important physical wants of yours.
The thing is though, you like every able person in this world, have a duty of care to yourself rorst and foremost. It is not the primary responsibility of medical proffessionals or the use of medicinal drugs or supplements, that is meant to substitute that responsibiltiy for people who have the time and enough physical ability to fufill that duty of care to themselves from birth.
Some knowledge of how to fulfill this responsibility is required, but when you have the educational tools to build a good physical self, a person with enough time and physical capability should go out into the world and make it happen.
You have the time and some understanding, to make the person you want to be happen. This does not mean you will be perfect at it, or never need to ask any questions about how you want to live and how to go about it ever again, but a big understanding is to realise that it comes down to you first and foremost to do what you can to be a better physical presence in this world.
If you base your attempts too much around group or team invovement and / or the need to have maximal levels of support from varying sources, then your attempts could fail, if you don't get enough of what you have deemed proper emotional sustenance and you have eluded to this in your previous post, by saying without team / group involvement, you would quite likely not go to the gym and train alone, because that emotional attachment to a team / group based activity, gives you what I have deemed, some pre-defined sustenance; you in effect believing that this setting is the kind of emotional nourishment needed to progress and achieve that perseverence on your own cannot provide.
Ultimately, you and your physical future are what is truly important in all of this. Having some support and / or a team / group based endeavour for fixed periods of time, can be a good thing, but if you cannot develop a flexible mindset, which allows you to focus on your goals, from a solitary perspective as well and to be able to build confidence and belief in yourself, when you must press on by yourself and forge some of the path on your own, then you're increasing your chances of failing.
I don't want someone I have a massive amount of respect and liking for, to be feeling as if certain things must happen to boost chances of success, because I know that even if all you had ever had, was your own levels of dedication and a smattering of input from people like me, you could still do it and I am rock solid certain in own mind you CAN do this Christina.
No matter what you wish was possible, I.E. having more support from close quarters, compared to what seems likely, you CAN make this happen for yourself and you CAN be everything I've ever said about you, because nobody has ever said you had to be someone that started at a base point and had to become capable of doing Iron man events, or setting olympic qualifying standards at something within 5 years, or become an abject failure, so neither you nor anyone else, has ever set a physical bar for you, that is perhaps excessive or potentially unfair and unrealistic.
I know that with time and as much realistic support as myself and others can give, you CAN become fitter, stronger and healthier and a beautiful example to others of how ot believe in yourself and never give up.
If you never did anything again that involved group or team settings, beyond what you currently planned to do, I know you could go it alone with your own mind, heart and whatever myself and others can do to push you.
I am convinced of this, because I believe you are so much more of an emotional and mental presence in your body than you might believe. Dig deep and keep learning about yourself, emotionally and mentally whilst you learn how much your body can change by doing it.
You don't EVER have to be the person who got unwanted comments from others again and you don't EVER have to be the person who felt so lost and confused about themselves they cried in the shower.
You're better than that sweetheart and you can be so much better than that, if you realise that with or without certain people and things to feed off, you DO have enough nutrition and nourishment from your own head and heart, to provide you with the fuel to progress physically and succeed

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Barring quirks of fate, nature or sheer misfortune, only YOU can stop yourself from achieving what you ARE capable of and I am absolutely certain you CAN achieve

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I'm sending you a
BIG HUG, because I want you to know how much you should mean to yourself like you mean to others.
I want you to get up in the mornings and see the person are today and say goodbye to the person who was slightly less fit the day before and hello to the fitter you you've woken up to.
You've already come quite a distance and you deserve to be so proud of yourself and you deserve to smile. You've earned that and I'm so darn proud of you and you are unique in your own way and beautiful in your own way too. Build on that and don't stop trying to aim for your best and to stay there forever. You are physically capable and have been since you were born.
It's your right and duty to do it, so don't ever throw that away and potentially regret it in later life. I want you to be stronger, fitter and better in your later life, so hopefully you and bf can enjoy a long, good life together and you can have many reasons to be happy as an individual.
Chin up, keep believing and GOOD LUCK. You are a wonderful an beautifully human person Christina, so don't let yourself down, because you ARE worth so, so much more than that, whether it has to happen with team X or team you, because what is often missing from failure to physically succeed, is not the lack of people who could have helped you along the way, but how much understanding and belief you could find and use, to help yourself achieve physical goals

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