Do you confront your partner about the situation now, or wait until after the holiday in the hopes of lessening the animosity between the two of you whilst on holiday?
The holiday is for my best friend's wedding, so there will be lots of my friends there I can hang out with instead of him, at least.
ETA: I confronted him. I might have overreacted slightly with the whole ~emotional cheating~ thing initially. Basically we're just having a really massive fight now and he's still coming.