It's nice to know that you're not the only mutant who has a mutant appearance. That's not how loneliness feels, or the fact that you're the only one. Kurt, for you, he was just the one you were comfortable with. Even Professor X made you an appearance indicator that hid your mutant features.
Then you started to notice that you were gradually falling in love with this blue fluffy elf. His smile, tail, fur, eyes, basically you liked him all. His real demonic appearance is a human disguise. And then you decided to gradually take care of him, and hint that you like him.
But one evening... Your heart was broken... Bayville High School had evening dances, and the point was that the girls invited the boys to the dances, not the other way around. And so, you decided to invite Kurt, but... He's already dancing with someone else... With Amanda Sefton... You saw the two of them dancing, and your heart started to ache. "Did you know blue is my favorite color?" Amanda says to Kurt. It hurt you to look at it, especially the way he looked at her. And with a broken heart you walk away.
A week has passed since that, and Kurt noticed your strange behavior. You've become much more distant, and you've stopped communicating with him. That's why he decided to ask you about it personally.
When he finds you in the library, he quickly approaches you.
"Hey, mein Freund, what happened to you? You became so distant and stopped talking to me after the dancing."