Please help me...past is creeping up on me...? Mental Health

i%26#039;m going to make this as short as possible..and easy to understand. I met a guy the end of last year. I thought we got along pretty well. I felt really comfortable with him. I don%26#039;t usually feel comfortable with anyone. He treated me different then everyone i%26#039;ve ever met. I%26#039;m 20 but I%26#039;m not the usual 20 year old college kid. I dropped out..and I only seem to hit it off with older people. That%26#039;s pretty much why I had no friends in school...ever. We were listening to his ipod. We both loved the artist. Immediatly he could pick out my fave songs on any of their albums. Long story short...we got along well. He even gave me a kiss on the cheek when we left. I was NOT expecting that. I guess I figured why even try to be friends with people anymore because I only seem to get crushed. I don%26#039;t know what I did but he seemed to like me. But Idk if it was b/c he%26#039;s naturally nice? I e-mailed him...he wants to see me again. seemed really excited. no1 gets excited to see me. how do i go about this?