Girl giggles after I kissed her on the cheek?

Anonymous
I went out with this girl for 3 months. She broke up with me, and two months later we started to drink coffee and go to the movies and just being friends. One night after we went and watch a movie, she gave me a hug (not unusual, we always hug each other after we went out for a coffee or movie or what ever we do) and I involuntary gave her a kiss on the cheek. She started to laugh, which I assume was a nervous laugh, and she then went to her car. I don't know what to do, and what the nervous laugh means.
Girl giggles after I kissed her on the cheek?
3 Opinion