Rob Kardashian posts...then deletes cryptic girlfriend tweet!

Oopsies! Rob Kardashian just let the ball drop on who he'll be going home to after his sister Kim's lavish European wedding.

The 27-year-old posted the tweet below, then deleted it 10 minutes later.

But was it a change of heart that made him go back and delete, or is he just not ready for the whole world to know?

Either way, we can't wait to find out who it is! Stay tuned to TheFIX for more...

Related video: Rita Ora explains why her and Rob split up...