ex (n)
Someone's ex is a person who was their wife, husband, or partner in the past: Is she still in touch with her ex?
forgive (v) (somebody for something)
to stop blaming or being angry with someone for something that person has done, or not punish them for something:
fight with (v)
[ I ] informal to argue: I wish they wouldn't fight in front of the kids.I could hear them fighting about money again.