He should run because he can't handle her. That's how we should look at it. If she's not a drug addict or caught up with some bad people then she's probably just having some fun and this guy can learn a lot from her. If he takes that step.
I know it's horrible to say but it's like taming a wild horse. She's been rewarding him for his good behavior (The kiss outside after he got jealous) he needs to flip the table and start rewarding her for her good behavior.
But that's just my mentality and I love the game so idk.