My Relationship

Melissa
So I'm 17 going to be a senior, but I have a thing for like 3 or 4 year older guys because they seem to understand more and aren't immature. And I started talking to this guy, but lately we haven't been able to talk because his unhealthy drinking and were not like supposed to be seen in public because he's 21 and he can get into a lot of trouble from what him and I did. At one point we thought I was pregnant because of unprotected sex and that actually turned out pretty good. But now he's getting me confused he shows and tells me that he cares for me and that he doesn't want anything bad happen to me or he doesn't want to hurt me in any way. One that thought how am I supposed to not get so attached to him when he's going to school like miles away from me and keep doing what ever comes to mind or thought? Please give me advise or thoughts.