Harry hadn't initially wanted to do theatre.
It's just... he had been bored during his summer holidays. After the defeat of Voldemort, he felt as though he had no purpose. His best friends no longer spent time with him - too busy caught up in their new-found romance, and after the war, there were few that he could truly count among real friends. So he became bored. Grimauld Place was not entertaining at all, what with it's ever-present yelling (thanks to the horrendous portrait of Walburga Black) and it was on one fateful evening walk that Harry spotted the sign.
Literally.
It was a sign.
Community Theatre! Wizard Lead wanted for new musical! Must be between the ages of 18-24. Some nudity may be required.
And to be honest, the new challenge excited Harry. He signed up an hour after finding the flyer, and was immediately cast as the male lead - a character named Liam. According to the script (or what he had read of it so far), Liam was a typical teenager, fresh out of Hogwarts, and in search of his future. He decides to travel around the world, trying to figure out who he is.
Harry hadn't read to the end yet, but he knew a romantic interest would be present. That was the way with musicals, was it not? It was only on the third day of rehearsals that he read far enough to find out - Liam was gay.
Oh.
Well.
The words from the flyer suddenly reappeared in his mind.
Some nudity may be required.
Well, shit.