Well my girlfriend during our relationship and towards the end of our relationship and after we broke up was consistently flirting with a guy that she had a thing with three years ago in which she kissed him back then, was going to date him back then but it didn't work out , she thinks hes 10/10 and they talk on a regular basis. So then i find out that he has feelings for her but claim their not strong feelings and I believe deep down that she has feelings for him also but she keeps denying it. And now that she's begging me to give her another chance i just don't no what to do, any help