He hated dogs.
He loved them in photos and videos, but he was allergic to fur.
Therefore, you had to beg KyungSoo for a puppy as a pet, but he always refused.

One day, it got to the point where he saw you were so upset you couldn't have your own pet that he bought one.
He bought a puppy for the two of you as a couple's pet.

"I thought you said you were allergic to fur." You told him as you saw your new puppy.

"I know. But I'd do anything to make you happy."