I have a boyfriend but like someone else..?

I have this boyfriend for 2 years but we've broken up a few times. Ive done him wrong cause i thought he did me wrong and everyone tells me i loved him an was hurt so i cheated on him but he says nothing was true bout him cheating on me an hes always beggin me to do things but then sayn he love me the next. So i recently found out his bestfriend brother likes me. And wanted me to meet him somewhere. And now i thinkvi kind of like cause whenever i see him i get tht good feeling. So i dnt kno if i should stay with my boyfriend or give the other guy a chance hes very nice to me.(: