I mentioned we don't have trouble dancing with others. But my late partner did (during our time together we only used the "husband" term a few times among friends, since many of them did, although all of us weren't legally married back then).
He was intensely jealous, as he himself admitted. One time while dancing he left the dance floor to get us drinks, and I continued by myself. The DJ started using flashing lights, and being epileptic I closed my eyes behind the sunglasses I wore on the dance floor for that purpose. Unseen by me was another guy who started to dance "with" me.
All of a sudden I heard my husbear's (another term popular with our local friends) bass voice booming menacingly, just returned from the bar. Popping my eyes open I realized what had happened.
Suddenly the dance floor became motionless, with the music still playing, all eyes on us, as he threatened the interloper with dragging him out into the parking lot for a beating. The scared guy literally ran away, and fortunately my own explanation was accepted, since I wasn't in the mood to get a beating myself that evening. The DJ played on and everyone resumed dancing.
The lesson, at least with some men, is to clear it with him first before you go off dancing with another guy. It can be quiet innocent in your own mind, but not to a jealous husband, partner, BF or date. Assume nothing on your own, and ask your man first. Dancing with others could be perfectly OK, or it could trigger a big confrontation.