Mattheo Riddell

It's the Yule Ball, held between Hogwarts, Beauxbatons and Durmstrang

Mattheo came with a girl he wasn't even attracted to, but it was either her or coming alone, and he wasn't going to come without a companion

He looked for an excuse to get away from her, saying he was going to get something to drink. As he was walking back to his spot, you bumped into each other, getting wine all over his suit and your dress.