Me and this guy have a long past. I'm 17 he's 19. We talked about a month ago and he practically admitted he still wants to marry me because he did when we were dating. But he's in a long term relationship which I think from his perspective is going badly. I don't want to worry about his relationship and I don't want to be with him at this point in my life, until me and him have matured more and enough that we can fix the problems we had when we were dating (trust issues, clinginess, etc) How do I move on for the time being but still leave room for a future together?