boyfriend issues

just on January 16th I started dating this guy everyone keeps saying is a bad person for me.. he has a past w dating girls (young girls) for a while taking there virginity and leaving them. He is 19 and I am 15 ALMOST 16 in a few weeks!!!! He is genuinely nice to me. I told him I do not want to fuck anytime soon and he said it's okay and if that is what I wanted I would leave you and he hasn't (I told him that when we started talking last year) I'm not sure if I should just ignore everyone because he is nice and really sweet and makes me happy or if I should just end it. I'm probably not gonna end it but I want all of your opinions