Oh my, if you weren't already living together then it would be easier :C

I'm so sorry that the person you love isn't as supportive as he should be. But perhaps he simply doesn't understand? Maybe you could try explaining to him? Though I'm quite certain you've already done so. You could reiterate.

If I were you, and I'm saying this as an 18 year old child who has never had a boyfriend lol, that you need to sit him down and ask him if he still wants to be with you. Not the "old" you or whatever version of yourself he "used" to have FUN with, or a vision of you that he has but the current you. You could go from there and do what you think is the best for the both of you, not just him.