<human>: Can you condense the text into a few key points?

My boyfriend and I are both 21 and have been dating for about 2.5 years. We moved in together about 4 months ago. Since then, we began fighting more frequently than usual and he now says that when the lease is up, he'd like to move out. This makes me really uncomfortable, and I've told him that, but he always says that he has to do it and that I should be supporting him. His reasons make sense on paper (he wants to finish his degree, get a better job, 'grow up' more) but it breaks my heart and I feel like we won't work out as a couple. 

I feel like we'd be regressing, which doesn't seem healthy to me. Additionally, this makes me feel like a failure as a girlfriend and it makes me think that if he doesn't like living with me now, why would he later?

I'd love some thoughts or advice on this issue.
<bot>: My boyfriend wants to move out but continue our relationship. I feel like we would be regressing and end up breaking up.