Sex with my boyfriend

Ok so my boyfriend lost his virginity to me a few months back and now it’s like that is all he wants to do...me on the other hand don’t really want to do much I don’t even feel like kissing anyone these days. But I don’t think he sees any of that. I probably don’t want to because of depression and stuff but it’s like he keeps pushing me to and I don’t wana put him down like ‘no I don’t want to’ but I don’t feel like it but I know I won’t for a good while. Just..I don’t know what to do. I mean I’m not worried about pregnancy because I’m on depo shots and we always use protection. I’m just not in the mood and he seems like he’s sooo horny around me. I don’t know how to fix my situation.