Any of the servants, honestly. Finny would be really fun to be around since he's just a big pile of sunshine. Mei Rin is adorable, but also a badass so I'd feel sûr, sans danger around her. Bardroy and I would just screw around in the cuisine every jour and débats why ou why not to blow things up.
He's actually kindhearted to Lizzie and loves her so I think I would want to rendez-vous amoureux, date Ciel. Lizzie x Ciel 4ever ♥ Guess what? I searched up the meaning behind the name Ciel and it actually means Sky ou Heaven >.<