Search Results: sisters boyfriend cheated

I just found out my sister is having sex with one of my best friend's boyfriend. My house is usually a hang out place during the summer so my sister and my friend know each other. If I tell my friend I know she'll find out who the other girl is. Should I tell my sister to stop what she's doing? Should I tell my friend what's happening? Please give me any advice you can. This situation is killing me.

My boyfriend and I have just recently broken up (3 days ago). I caught him in lies and he was talking to his brothers gf's sister...imagine that. I would be lying if I said that I didn't do anything wrong in our relationship although it never involved cheating but it was effecting us on a daily basis. We were together for three years. I love him and miss him a lot. We said our mean things and he said he didn't think he could ever be in love with me again but he still loved me a lot.

We have texting and I have already made it clear that I am very hurt and want him back. He has been sending me mixed signals. It's very uncommon for us to ignore each others texts (although he usually can go longer without texting me back than me). Would ignoring him more often and taking awhile to respond actually work?

I understand that we both messed up and I vowed to change myself. I love him so much and don't want to live without him. How can I make him miss me and want me back?