Erica doesn't want Mason know that Cooper his father just yet. She also wants Charlotte to have zero contact with the boy. Cooper assures Erica that he's ready to be a father. That's good. Because Mason senses something is up. Erica finally feels comfortable enough to tell him the truth. Mason takes the news in stride. He asks Coop if he wants to watch a little Phineas and Ferb. Of course, he does. And not just because it's a really good show.
Addison needs help with her hormone shots since they must be injected into her derriere. It's an angling issue. Jake steps up to the plate. He gives her the shots and massages her butt. Medically, it's the best thing to do. Jake assures his colleague that he's deriving absolutely no pleasure at all from this. And Addison is deriving no pleasure from the wild emotional mood swings she's having.
Addison lets Sam know that Jake has been giving her the hormone shots. It's the first step towards her getting pregnant. Sam doesn't want a child. We already know that one. But he also doesn't want Addison keeping secrets from him. Deal.