Well, you took a risk with the romantic ending of the movie, and it didn't quite work out, but I think that's OK. You experimented with something because you felt passionate. I don't think that you made a huge blunder there. At some point in the future, you may try something like that again, and she may react completely differently.
As far as being angry with her when you said goodbye: It's hard to not react angrily to her, I KNOW, especially in a situation where you were caught off-guard seeing her. We just both have to get to a point of no expectations, no expectations and no reactions from us to perceived rejection or hurt.
Other than that you had a great lunch, shared a great movie, and got to see her--all positives!
So, don't feel like a failure, you're NOT in any way, just let it strengthen your resolve to react differently next time.
It is in the shelter of each other that people live.--Irish proverb
