Imagine you're with your wife for eleven years. You have testing times but you stick with her even though she annoys you.
Suddenly, another lad with a nicer car and a bigger house comes available, his long-term missus is off. She jumps ship, bails on you and jumps into bed with the new fella. No loyalty. About eight months in, the new lad files for divorce because he feels she's inadequate.
Your ex is now looking for companionship and jumps into a relationship with a Spanish lad whilst on the rebound, but it doesn't work there either.
Suddenly, you win the lottery and your previous bird is interested again. You can have her back.
Do you take her back? No, because you're not a massive mug and you can do far better than her.
That my friends, is David Moyes.