How Can an Angel Break My Heart

Prompt Fic #1
From the prompt:
How hard could it be for Xiao Zhan to get indefinitely housebound with the one person he wants to wipe off earth's surface? What's the worst that could happen? Well, He could fall in love. Maybe, for the second time as well. And also, just maybe for the very same person.

Xiao Zhan gets stuck in a cabin with the one man he can't stand to see.