Several years ago, my hubby and I were at a resort when the entertainment fella's Canadian wife was there for a week's holiday.
A month later my neice went to the same resort. The entertainment fella, although married to a Canadian, shacked up with my niece's girlfriend for the week she was there.
Even married, they possibly cannot be trusted.
Every week a fresh batch of "girlfriends" arrive. I would certainly discourage her from believing she is the only one.