What constitutes cheating? Most people might agree that having sex with someone other than your partner is clear-cut infidelity, but what about sen...

It's true that the cuckolded spouse generally suffers immense pain at the hands of his or her cheating partner, but what about the mistress? On Hu...

Several years ago, my mother's partner sent me an e-mail confessing to an emotional affair. He wrote that although he and my mother were breaking up, ...

Are couples too quick to give up on their marriages following infidelity? That's the question author Wendy Plump posed on Thursday in a HuffPost Di...

One of the things that surprises me most about infidelity is that anyone is shocked to the point of awe when it happens.

I know Valentine's Day is a silly greeting card holiday that shouldn't really matter to me -- and yet, it does. As a single woman, all the hearts and flowers can be a painful reminder of what I don't have. As a divorced woman, they can be an even more painful reminder of what once was.

Why do some marriages last and others fizzle?

What should you do when you know that your friend's significant other is cheating on her? You might expect a friendship advocate to champion, "Alway...

Affairs usually reflect something about a person's existing relationship that's not being faced. Nevertheless, affairs can be psychologically healthy for some people.