Boyfriend giving up on me

My boyfriend use to be so loving and always there for me like couldn't fall asleep unless he knew I was ok but lately I feel he doesn't care we got into a big fight a few months ago and it messed us up a bit I felt down thing was wrong ever since that fight and he says everything's the same but right now I'm going through my depression again and he doesn't care it seems I'm giving one word answers because he's been mia all day and he knows I'm upset but he doesn't really care after not saying where he was doing all day although I saw him post selfies and stupid shit on ig he stopped answering me he's not even saying goodnight to me I just don't know what I did wrong. I give him everything! Support, love, space, everything! I feel so betrayed , I talked to him about it before too and he says he doesn't know he doesn't feel like anything changed but I do. And I'm heartbroken. How do I get my boyfriend to love me again💔😩😓😭