SALLIE, 31, lives with her girlfriend, but she also has a boyfriend she spends just as much time with. The nonprofit worker occasionally has other partners on the side as well, as does her girlfriend.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." Even though “polycule” sounds like the name of an experimental UTI antibiotic, it’s a broad term used ...

If you are just now hearing the word “polycule” for the first time, you're not alone. Even I was quite unaware of this concept until a barrage of features on polycules (and the dynamics involved in ...