Why are they so obsessed and possessive over ex-partners? It's baffling to me. Why should Emily care that Harvey has been with Inga? She's not with him any more. Move on woman and all of them, they all do it, all the time. In my 20's I've split up with people then they move on and often I've known/been friends with the people they've moved on to. If you have a problem with it you've got problems with your own feelings and you're projecting.
Maybe I'm too casual with this, I don't know.