Sigh,there's one guy who courted me who admitted since day one that he has been involved in a same ?

relationship.At first,it was easy for me to accept it bec i had friends who are having same (gays) rel and they're nice so i was thinking that he's also a nice person and he has it in his heart that he's willing to change.after 3 mos of being together,i decided to break it off bec i can still observe that he has still some gay vibes going on and it hurts me and makes my mind filled with doubts,my main question is i guess,if a person becomes gay, would there be a chance of him having a change of heart?like being able to love a woman? pls help, thanks!