Is it illegal to have sex in a parked car?

My girlfriend and I were having sex in my moms car in front of walmart and the security guards stopped us. I was to scared to get out of the car, so I turned on the ignition and left the scene, grazing the security guard. He got my license plate number and now there is an investigation, what should I do? On top of all that, Im 26 and my girlfriend is only 17, which they also found out about, will I get in trouble for this?


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