My boyfriend of 8 months was a swinger before me but won't stop talking about it asking if I'd join in I tried it once and it wasn't for me but after tht he stopped and then he start working away and now messages me everyday talking about what he wants to do iv found out by 3 people he was having phone s...ex with them and he said he didn't but the proof was there can he ever change are am I fighting a losing battle should I walk away are fight