Okay um... I don't really have any ideas about what Aurel and Marko would do (unless you actually want to go with that creeping in the bathroom with monaco idea) but yeah, whatever works fine~
Hmmmmmmmm.... well, he likes flowers and stuff, right? Maybe he and Mei could bump into each other somewhere out in town or off school property, where there are a bunch of flowers? I'm sure there's a botanical garden somewhere, or something.
Otherwise... I... have no ideas whatsoever what we could do.