I would have liked to see them decide, as equal adults, that they were incompatible as long-term partners because of who they were and what they needed. But given the way the relationship started, I guess it makes sense that the writers went the love-as-addiction route. Still, it seems ridiculous that Cuddy would suddenly decide to give up on him because her drug addict boyfriend slipped up just once when he was afraid for her life.

Maybe her nightmare about him and Wilson bringing up Rachel was just too terrifying.