No one "forces" anyone into the arms of another. People choose to have affairs. I agree that having a sexless marriage would tempt nearly anyone, but it is still a choice you make, to be faithful or not. If you cheat, don't blame your spouse - he/she didn't force you to have sex with someone else. Take some responsibility for your own actions, just like you are asking others (your W, for one) to take responsibility for theirs.
