Complicated 🥺🥺

So here’s the tea that has been keeping me depressed lately:

There’s this guy I have been talking for quite a while already, we lost our virginity with each other so we were each other’s first and everything was fine for quite a while, the thing is lately he has been acting quite distant and we don’t talk as much as we used to talk when we used to talk 24/7, like we still talk but he will take really really long to reply when he never did that before. He used to call me “babe” “hun” or any another cute nickname and now does are not even part of the conversation and I’m the only one that is always calling him that. The bad thing is that we never establish what we have, we have never talked about it and I think we are not planning on doing that, but this is where I get confused, one day he will take care of me and treat me like he used to, and tell me I’m the only person that makes him happy and that understand him but then the next hour or day he’s acting up again. I honestly don’t know what to do I don’t feel like confronting him because I’m too scared I’ll lose him, I also think he’s talking to other girls and Idk how I feel about that but that’s another tea, I just don’t know what to do, I have tried to act like if this is not affecting me and that this is all good but he knows me way too well and I don’t want him to notice what’s going on with me and i know the answer to this “to talk to him blah blah” but I’m scared I’m going to screwed what we have up and that’s something I don’t want 😔 any thoughts? Moral support? Anything that will make me feel less stupid and vulnerable?