Groping a dating app connect in my car

I connected with a woman on a dating app. For a few days we spoke casually and decided to meet at a pub one evening. I picked her up from a location near her home in my car and I drove to a pub a few kms away. While on the way she said she is a small time actress and felt very comfortable with me. She even started touching me and holding my arm while driving. We then had few drinks and light dinner at the bar and as conversation flowed she admitted that she is aroused and doesn't mind going ahead with some fun. I was also aroused by now and immediately didn't know where to take her. We decided to make out in the car and stopped in a less busy area by the road side as it was dark under a tree. We started to kiss each other and I groped her all the way from her thighs, boobs and gave her french kiss and she started stroking my dick. As we were about to move to next level, we heard knock sound in car window. We immediately adjusted ourself in sitting position and I opened the window . A person claiming to be police man asked us what are we upto and he will put fine etc. I said we are just talking and we were colleagues and on the way home. He asked us where are our homes and we said the area nearby and he asked us to move from there immediately. By now we were pissed off and lost our mood. I dropped her home and headed back to my home. That's the first and last time I have met her.