Second chance? or not?

i was going out with this guy for a couple of weeks for so me reason we always fought and argued and broke up wevery minut.. so happeneds one day we broke up again thinking that it was or daily fig hts he went back withhis other ex..4 months later he calls me back apologizeing we are good frei fds im not the type to be holding grudges... he told me that hhe is over her now etc.. should i belive him? should i give him another chance? or just be good freinds? ( as of now we are friends and thi ngs are great actualy)