my brother is a cheater

i think you need to talk to your brother.... tell him what would you feel if i was been cheated. talk to him reversing the situation. if she dont like his girl then might as well end the relationship than leading along like this. tell your brother if he will not fix this then you will be the one to tell the girl. lets see what he will do?

I think it is best for you not to tell the girlfriend of your brother that he is cheating on her even though she is your friend. Your brother will hate you for telling. Trust me. I know because I made that mistake 3 years ago. I found out my brother was cheating on his girlfriend. He was kissing another girl in our house. I felt sorry for his girlfriend so I told her about it without even thinking twice. BIG MISTAKE! My brother hated me. He told me he could not trust me anymore. He also told me he would not share secrets with me already. I really felt horrible. So just let your brother be the one to tell his girlfriend. It is their relationship and they are supposed to be the ones fixing it or ending it.

hey well mostly this happens. well i would like to tell you that mostly sister do this thing. but some sister like my sister she donot accept my cheating in exams. and if i do this cheating she will surely gonna kill me. well i thnik you brother is doing wrong thing.

It is really not your place to tell his girlfriend anything. The most you can do is talk to your brother and try to work it out that way. I understand how you feel, but your brother is your brother no matter what. Make it clear to him how much it is affecting you as well what he is doing. Ask him if he'd like it if he found out your partner was cheating on you, and making you look like a fool. I think he would take it a bit more seriously when he sees it from your point of view. Good luck.