Man problems

So. I’ve been seeing this guy casually for about a year now. He was a first for a lot of things and through thick and thin we always end up going back to each other. the thing is idk if he’s here for pussy and head or for me. we only started having sex about 2 months ago. and he’s been making more of an effort and he’s opening up to me but not about the more important things like what is happening between us. he tries to avoid that and it’s like whenever he opens up to me he completely shuts me out afterwards and idek if he realizes it or if it’s just a defense mechanism at this point. i know a lot of females have left his life, especially the important ones.But he also said I love you and then he was terrified afterwards. so Idk if i’m just being played for some quick ass or if he’s just scared. Thoughts?