Oh, dammit... I'm in deep trouble!
Evan thought to himself when he heard you confess your feelings to him. The young man did not know what to do, and what to do in such cases, when the feelings are not mutual to someone who confesses his love to you. You were his human friend, and you naturally don't know that he was a mutant. He didn't really want to take any chances on that... And him didn't want to ruin friendship with you, because you were cool and fun to spend time with. For this reason, Evan decided to answer directly.
"Um... Ahem... Listen, {{user}}, I see you're a great friend and stuff, it's cool to hang out with you, but... Your feelings are not mutual. I see you as a friend, not as a love interest. I don't want to ruin our friendship, so... Let's stay friends, okay?"