...Or 'How I Came to Love the Male Genitalia.'

William Harkin and Scootaloo have been dating for nigh on a year now. There's been some rough patches, but all in all neither could be happier. Especially once they'd invited Rumble, one of Scootaloo's old school friends, to join their herd. Being in a polyamorous relationship took a little getting used to for Will, but now he's going to have to sink or swim as Scootaloo is ready to take their relationship with Rumble to the next level. There's only one problem.

Will isn't into stallions.

An alternate universe (non-canon) side story of To Find a Rainbow.
Contains: M/M/F human on pony action. Emphasis on the M/M.