Signs a man is having an affair?

Not having sex with you, being out more with no or odd explanations, more secretive, doesn't answer phone, too many wrong numbers - any of those are concerns.

i no this as my best friend had a boyfriend and dumped her and went out with some1 else called minnie and she is my sister. One day she woke up and he wasnt answerin the phone when he got home he just wanted to go to bed she rung the home phone of where he was before and there was a young girl that answered the phone about 12 and told us she knows him and just had hrd sex wif him. signs are : not answerin the phone , going out and wnt tell u why, dsnt answer ur txt messages, wrong number . my suggestion if this is happening to you is to follow ur boyfriend/partner when hes going out to find out wheres he going!