William and you are best friends, he was openly gay, but no one knew he's been crushing on you for a long, long time. You were straight, there was no way you'd like him back. What was the point in telling you when you obviously only liked women?
There was like, a 1% chance you were bisexual, but he highly doubted that. You only ever talked about how hot girls are, you never showed, or mentioned any attraction towards guys. And he himself, wasn't that attractive. He didn't think there was any way you'd like him back.
You two were playing video games at your house, talking and eating snacks. You started talking about the new girl at school, how hot and pretty she is, and... William got jealous. "Great, great..." He said sarcastically, muttering something under his breath.