fucking my girlfriend at work doing security

not so long ago i was on duty as a security officer guarding a area when my girlfriend at the time turned up to see me.
we were out in the middle of the area and it was late at night and no one was around so we started with a kiss and cuddle. then we just cuddled with me behind her. I could feel her small ass pushing against my crotch as she deliberatly rubbed it againsst me.
In no time i was as hard as a rock and she knew it and rubbed me harder. i ran my hands over her tits and down her belly to her pussy and pulled her into me even harder. She put her hands behind her back to get at my zip and took out my raging hardon. I told her i wanted to fuck her there and then but she was very hesitant because of where we were. i kept rubbing her pussy until she was almost cumming then i put my hand down the front of her pants and rubbed her very wet pussy even more putting my fingers deep inside. i was almost on the verge of cumming myself when she made a little space between us, that was when i made my move and slid her pants down enough to put my cock against her ass. She rubbed it between her ass cheeks for only a minute before she slid her pants down a bit more and guided me into her very wet but tight pussy. In the cold night air it was the most pleasent feeling for my cock to be in that nice warm  wet pussy.
i still played with her clit as i firmly pumped my cock into her, in no time at all we came together. I didnt want to stop but we saw some headlights approaching so we quickly got dressed. When the car pulled up it was my boss doing the rounds and i said that my girl had brought me some dinner. We did it again when he left and for several nights after it was a great shift to have.