They are, in a word, tolyamorous.” Marie Thouin, a relationship researcher, coach and author of the forthcoming book “What Is ...

Most coupled Americans assume—in fact, demand—monogamy. For many, any breach of sexual exclusivity spells disaster. “He cheated. It’s over.” Even when infidelity doesn’t precipitate breakups, it often ...

Today there are an increasing number of people who open up their relationships. “Opening up” means that you can date or have sex with other people—and in some cases both—while still being in a ...

A recent study published in the Journal of Sex & Marital Therapy explores the aftermath of infidelity, revealing that many couples motivated to heal are able to stay together. The research suggests ...

Infidelity is a huge deceit, but that doesn't necessarily mean it's an obvious one. In fact, serial cheaters and practiced narcissistic partners have often figured out ways to hide their misbehavior ...

It can be hard to figure out if one's spouse is cheating without real proof. If someone's husband is doing these six shady ...

Last summer, a friend called bearing bad news: Her two-year relationship was finished. In between insisting that she was, in fact, totally fine, and that everything was probably for the best, she told ...

Cheating can destroy a relationship, but not every couple calls it quits. Here are seven celebrity couples who reconciled ...

AI romantic companions — digital agents that can text, speak, flirt and are always available — are a rapidly growing social ...