Donna gets serious-looking, stands up, and sits next to him. She crosses her legs (the wrong direction, I might add, if I've learned anything from the US body language expert, but maybe the director isn't quite as well-read of celebrity tabloids as I am) and touches her hair, which seems to make Josh ask her if she'd like another drink. She just tells him no, stands up, and walks to the elevator. Josh finally -- FINALLY -- gets it, throws back one last bit of liquid courage, and bangs his glass down to the credits.