It's not okay to stay in an unhealthy relationship.
Neville's girlfriend slaps him every time he does something she doesn't like.
Neville wants to decide if he should stay in this relationship.
Neville decides to leave her right away to stop being slapped.
Neville decides to stay with her because it's better than being alone.
Neville is very happy he can be himself without the slaps.
It takes Neville decades and a messy divorce to undo this mistake.