[M]y girlfriend and I had our first public experience yesterday

So yesterday, my girlfriend (Ashley we'll call her) and I met up yesterday. It had been about a month since we last fucked and about the same time since we had spent more than 25 minutes together.

We were both understandably horny and decided to look for somewhere to fuck; it was right after work and we both live a solid hour and a half from my workplace in different directions.

I have a small public sex fetish ever since I had fingered my ex in a park in broad daylight.

We went to the pier that was nearby, it had a parking garage that was undergoing construction inside and so we went in.

We climbed a flight of stairs and found ourselves in a section with cars that had dust covers and we took it that it was rarely used.

We got down to business in no time, going from oral to vaginal and back. However, midway, we heard some employees of the garage driving around on those John Deere type tractors with a luggage attachment and we hid behind a car.