Board Thread:Spoilers!/@comment-24179430-20150301105158/@comment-24674051-20150410140833

Possibly, but I think I would lean more towards someone connected to Young Lily and/or Young Emma. Primarily, based on what has been set up so far, the last time Lily and Emma interacted was when Lily's father came to get Lily. So, since both of the Young versions of Lily and Emma are in this episode, unless they fill in more of the Minnesota happenings (which I can't really see much more there, tbh), they are going to need something to provide some cohesion.

I could see this unknown young man being maybe a common friend/acquaintance to both girls.