there is definitely lots of detail to go into it but long story short, itd be his best friend he went to law school with. they would have landed jobs at the same firm and eventually climbed the ranks until they were both managing partners/on top of the world in their careers so-to-say. the darker aspect of it would be that the friend recently started hooking up with rowen's ex wife. the divorce was final in july 2017. so it would have been right after that. or possibly right before.