The "old" me would be very upset. BUT the "new" me would "try" to roll with the flow. We may be jumping to conclusions here.
Also, have you considered that he might decide to continue the evening with you after the movie? Don't get your hopes up, but it's a possibility, right? My GF used to tell me that I always "expected" the worst outcome. Expect the best & you just might get it!
Yes, count your blessings. At least you're having a "date." Make the most of it. You know what to do.
I'll be praying for you. Good luck! Let us know how it turns out.