"I wish I knew. But it's been a thing for a long time and keeps going in the future."
It's like a record scratching to a halt in Mobius' mind. "You'd kiss me because of mistletoe? You don't have to..." Look, Mobius likes him. He's fascinated with Loki, really. He knows almost too much a out him and doesn't think he's even close to being a candidate for the God's affection like that.