Too early for sex?

Jessica

I met a boy, We talked and we went out many times and we understood very well, after a month and a week we had sex, it was my first time, but I felt like I wanted to do that with him, did I do it too early? Could he have changed his mind about me? We talk the same as before, and even pay more attention to me and I feel him closer. He didn't asked me if I want to be his girlfriend so far. Is he talking to me just for sex? :(