My uncle let's call him Thomas.
My aunt let's call her Tabitha.
A family friend & neighbor let's call him Timothy.
Timothy's wife and employee of Thomas let's call her Tess.

Thomas is related to me and my family by blood. Tabitha is related to me and my family by marriage.

Tabitha was banging Tess (I walked in on them).

Tabitha & Tess both ended up broke, homeless, and without jobs since they violated their prenups.

Tabitha has supervised visitation rights of her kids that Thomas has sole custody of. These kids are now in therapy because of Tabitha's action during the divorce.

Cheaters are horrible people they should be shunned.