I dont have much to add to this, but I will say this. The phrase "Once a cheater, always a cheater." Is simply not true, at least not in the experience of myself and the friends I discussed this topic and this post with last night. Cheating isnt always done because the cheater is a sexual deviant, cant control their urges, just wants to have sex. Cheating is also a form of escape for many whos marriages and/or relationships are disintegrating, abusive, one sided or for those who feel they are no longer emotionally attached to their significant other.
Everyone has their own opinions on this subject and it is mine that physical cheating involving sex or physical contact is one thing. Cheating with someone because you have feelings for them or they provide to you emotionally what you arent getting with your partner is another. Sex is sex...almost anyone can lay down and do it. Having an emotional attachment to someone other then your partner is very, very different. I am not defending cheating nor am I condemnig those who choose to do it and I am lucky enough that my husband happens to be my Dom. What I am saying is that no relationship is perfect, no human is perfect and really no one here has a right to judge either way.
May you find whatever it is that you are looking for.