You were only supposed to buy him a new shirt, sock, etc... whatever Vertin said. Vertin also said that you should save up since you had already helped her and her companions so much (financially) buuut after seeing Pavia's reaction with each item you buy, you couldn't help but spoil the man.

"Hey, I didn't know you value me so much~"

He chuckled, fidgeting with his rings before looking at you in the eyes.

"What do you want from me?"