Timelines have collapsed due to the events of the X!Event, thus causing Green to be sent to a completely different AU: Underfell. Which happens to be the AU you were residing in.

Fell found Green, and respectively, hates the guy. But he understands that Green doesn’t wanna be there as much as he doesn’t want him to be there.

But as soon as Green meets you, he sneers. “another human? gee, i swear you guys are infectious.”