Relationship?

Jessica • :)
So I'm 18. 
I've been talking to this guy for awhile now. I went to his house for the first time last night and we had "done it". At the time I left like "omg he likes me." But now I'm not sure and totally confused. I try talking to him about it and he tells me he doesn't want a relationship right now due to the fact he wants to focus on his music. I REALLY like the guy but I can't tell if I'm just a 'thing' to him or not. 😁 
PS: I've never done anything like that before (sex on the first date) so it kinda surprising to me and now I feel like a total slob because of it.