Maybe Peak is a rebound man? It happens more than often. Blind items are funny, but I tend to think there's a little something to this. These things has a weird time to pop up and rumors started when someone knows something. I always feel that in Bella and Weir's relationship, he was in more control of it. There are times, I don't think he cares much of his actions in the relationship. He's messy because Bella is there to clean it up.
Anyway, Matt would be a good choice for the mistress role lol. I mean, if you are going to make a splash coming back might as will take up a role that has tongue wagging. Pat isn't strong enough of an actress to be a mistress yet. She to me, still has the skill of a naive n'ek...even with her lips enhanced made no difference to her, but made her acting go south.