It's wrong to date others when you're already dating someone.
Ryan is dating a girl but has lost his feelings for her when he meets a new girl that peaks his interest.
Ryan wants to date the new girl.
Ryan breaks up with his current girlfriend before dating the new girl.
Ryan starts going out with the new girl while he's still in a relationship.
The new girl appreciates having a new man in her life.
The new girl finds out and no longer wishes to see him.