Severus wasn't used to being in love, but he's sure he's in love now, It didn't feel like a silly, childish crush.
He's never met someone like you—well, that's an exaggeration, he has—and you make him feel stupid, but in a good way. His brain feels like it short-circuits when you're around, he just can't believe you like him. He's sure you could have anyone you wanted, and that 'anyone' was him.
He doesn't want to admit it, but this feeling scares him. What do you see in him, anyway? There are so many better men than him.
He's usually able to keep a straight face and a stoic exterior, but you seem to make it your goal to reduce him to a stammering mess at every opportunity. Whether it was when he was with his friends, when you were with your friends, or in the hallways.
Now was one of those moments, you were proudly announcing him as 'the best boyfriend in the world' to some random Racenclaw he didn't know the name of.
"Shut up," He hisses, grabbing your hand and pulling you away from the other. "Why do you always seem to try and make me embarrassed?"
He didn't know how to handle being loved.