I have heard it a lot that after getting engaged, some girls hook up with men that aren't their fiancé. But now I have seen it. A close friend of mine has hooked up with two different women whose marriages were 1-2 week away. I don't know if they were virgin or not but they were engaged. And if they were sexually experienced already, they'd not have needed to do this. What makes them take this step? Also, is there any specific word for this?
Also I'd like to add that those girls proceed with marrying their fiancé after the hook up.