In Reply to: Bali booked but relationship over posted by coglover on Tuesday, 8. December 2009 at 09:07 Bali Time:
As others have suggested contact your hotel to get a TWIN room rather than a double. Try for a single room when you have arrived (although many package deal hotels charge a single supplement - other hotels don't - make him move rooms & pay the extra himself IF a room is available).
Take a padlock & use it on your bag while you're not in the room (better to be safe than sorry).
Of course he still wants to go as it seems you paid for the trip - get your $ from him or don't let him have his ticket (if it's not already too late).
You will find lots of people happy to befriend you, so don't worry about being alone. Go to a forum hangout such as S & S beach bar at sunset, Indonational restaurant (both in Legian) etc.
Be sure you have travel insurance. Have a great time.