How do I pull away?

I usually don’t get attached to anyone or even interested in them for longer than two weeks, but this one guy I’ve been seeing for about two months, I really like him. He sweet, very affectionate, didn’t try anything the first several times we saw each other. Which I’m not use to guys try me quicker than that. He always ask me to stay the night and I don’t do that, but I caved in and did. We cuddled like all night. He went to work that morning and left me with a key and told me to keep it until he gets back and sent a sweet ass text message 😭😭. Of course I don’t know how he feels, he’s 25 & I’m 20 so I don’t know how older guys minds work. We had sex last week, I swear I think the sex got me, you don’t have give me head and have sex with me like the way he did and think I’m not gone be crazy 😹😹. Then he jumps on the bed kisses my forehead, cuddles with me and kisses me all over my back. I didn’t regret it... until I saw it made me turn into the “crazy over dramatic paranoid girl” that I hate, I hate her when I’m in a relationship, that’s why I DONT DO THEM ANYMORE. Now I’m over obsessed with is he talking to someone else? Are we even talking? Are we just friends??? How do I relax cause I don’t wanna need anything up.