I Have 8 months with my boyfriend.. so I met this guy and we started talking a lot until we became bestfriends then he told me he likes me.. I started to feel things for him before till now and now I'm confused and don't know what to do

Well your heart obviously is not with you current boy friend and that is not fair to him. Break up with him and stay single, then you can evaluate your feelings. But don't go from one to the other.

First many guys will "like" you and often when you start confusing friendships with dating.

IF this boy will try to get you even knowing you have a boyfriend, what will he do when dating you ?