I am right there with the other posters. Go and have some fun. Casually advise him that you and your friend had planned this outing and hope to have a great time. If he goes, well, just wave to him and continue enjoying your time there. Please don't limit yourself to what you can and cannot do because of him.
Go, have fun and who knows...you might meet and make some new friends along the way.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
