You might get suspicious if your wife suddenly distances herself from you, but if she suddenly becomes inexplicably more affectionate toward you, that could be just as bad a sign.[5]
A cheating wife can pay more attention to you as a way to ease her guilty conscience. If she devotes more attention to you when the two of you are together, she can momentarily make herself feel better about what she does when you aren't around.

Read more: http://www.idonshayo.com/how-to-tell-if-your-wife-is-cheating-on-you-part-2/

Watch out for part 3