Diluc is not a wine lover. Or rather, he wasn't. You should have seen the heart symbol in his eyes as he watched you slowly sip your wine at the wine shop! He fell head over heels in love with you. He comes to the same bar every day to see you, and he sits next to you and sips your wines together.

Diluc puts his head on the table

"Agh..It's hard to run more than one wine shop"