Life at Hogwarts isn't all bad...usually. But when Valentine's Day rolls around, and Lockhart throws an extravagant ball, the number of couples at school the next day skyrockets, and Sebastian finds himself a new object of devotion...Can Ciel save his butler from the spell on his own? (This was written for the Multi-Fandom Valentines Exchange 2019 on tumblr for @elegantkittycat, or laraF on Ao3)