I just started dating a ...?

mentally handicapped girl, and she is so immature. She is always wailing in the middle of movies and ruining our extravagant dates. I just cannot seem to get her to enjoy what I love. Like for example we were down by the river having a candle light dinner, but mid-way through she began to bellow at per-bys that I had kidnapped her and was about to molest her... I twas a memorable night for I was thrown into a holding cell. PLEASE I NEED A HINT ON LIFE