Harry followed Malfoy into the empty classroom. Some kind of hot and heavy scene of romance and lust ensued.
Later Harry thought to himself, "I sure hope Ron doesn't find out. He sure would be jealous."
But, of course, Ron DID find out. The next day. "Harry I can't believe what I'm hearing through the grapevine."
Ron proceeded to refer to some of his and Harry's history as best friends from the canon. He presented it such that it had an uncharacteristic twist of potential future romance between himself and Harry.
Harry affirmed Ron, voicing his own set of references to the canon, with any references to his canonical heterosexuality left out.
"...but," continued Harry, "I just have these feelings. There was just something about Malfoy. Like the light, as it played just so off his canonically accurate hair."