Leona, It is very hard, for both men and women to move on when they are in love. Think of the song "When a Man Loves a Woman". If a man says he loves a woman, and then goes and has sex with other women, I don't think he is necessarily lying. He loves the woman, but not with the type of love a husband has for a wife. He loves her more like a sister and good friend. That type of love is not a real strong, you are the only one I want, type of love. Therefore it does not bother him to have sex with other women. Sometimes there is a difference between loving and being in love.
Anna Sparky's Mom