I'm betting Peter and Emily have never done anything physical, other than hug. Lustless, no chemistry. Not a relationship.
He barely even looks at her, I'm not comparing his behaviour with Emily compared to that with KP, but he is clearly hedging with this girl - 'I like her, I really like her' said the same way you'd say you like a mars bar........he's a 40 year old man stringing an obviously star struck young girl along.
As for wanting to keep this relationship private being an explanation....this man keeps nothing private. Cannot even call it puppy love!
I am wondering too for how long would 'Embles' enjoy being surrounded by 'bro's' and hangers on all the time she's with him.