FR3AK- lams

John Laurens has had heterochromia his whole life. His left eye is ocean blue, the other is hazel brown. His sister Martha, who has it as well, comforts him through the constant bullying.
John moves up from South Carolina to a big house on the busy streets of Manhattan, New York. He takes it as his opportunity to start over. So, he uses sunglasses to hide his eyes, or push his hair so it's covering his left eye.
Alexander Hamilton is a popular kid. He's 17, has a car, smokin' hot, and a flaming bisexual in disguise as a straight fuckboy. He immediately takes interest in the mysterious boy. Though, his attempts to speak to him usually ends up in failure. Alexander, being the too determined boy he is, doesn't stop trying.

How did Alexander find out? Why isn't he calling him a freak?