Last night, I was with my girlfriend in the back seat

Last night, I was with my girlfriend in the back seat of my car, doing all kind of lovemaking Suddenly, and I don't know from where did he come, a police officer showed up knocking on the car and asking us to get dressed and get the hell out of the car we were terrified cause we've been busted, and the problem is that i don't have a driving license, it was my dad's car, and my girlfriend started crying The police officer looked at us for a very long time, then said: I will let you both go under one condition, If you let me fuck you in front of your girlfriend I was shocked, and refused, but he said that I'm already in a deep shit, and i better agree to what he offered I was speechless, so I accepted what he offered and let him fuck me When he finished, he told me to call him later so he will do things again to me. I don't know what to do, I'm terrified and I feel ashamed at myself my girlfriend refuse to talk to me anymore