Break Up to Make Up is the tenth episode of ALF's fourth and final season. It originally aired on Nov. 20, 1989.
When Dorothy and Whizzer have a fight, she leaves him and comes to stay with the Tanners.
Whizzer comes looking for her and goes to the kitchen where ALF is hiding and sees him.
When Dorothy gets back from the airport, she and Whizzer have a discussion where they make a compromise that he will get a gig that doesn't involve traveling, whether or not it is in Los Angeles.