FEW

Future Ex Wife. Often used to describe the woman in a marriage which is clearly heading for divorce in the future. E.g.
A gold-digging female who marries a man only so she can divorce him. A marriage where the couple has nothing in common and different values. A woman who marries a man who cannot sustain a relationship. Being married to someone who is known to be toxic or caused huge divisions between friends and family, when family is very important to the man.
For example Meghan Markle is Harry’s FEW (Future Ex Wife)

That is his FEW.

Has he introduced you to his FEW yet?
We went out to dinner with him and his FEW.
(After the divorce) well we always knew she was your FEW, now she’s an ex.