It had taking a bit of planning, but the main challenge was communication - striking the right balance between enough people knowing about it, so that it could happen, but not so many that Joe Public, or worse the media or cops, found out and started to snoop.

With notes in the right online forums and plenty of app messaging, the long weekend had come and Jen's and my plan was going to be put into action.

I'd met Jen online and we’d become regular playmates. Sometimes with her hubby Rod, who loved to watch and take pictures and shoot video.

Sometimes Jen just wanted a quickie. She would text me with a request, and I’d be there as quickly as I could, following whatever kinky instructions she'd provided.

She was always happy to meet me during the day for a sexy lunch break if I was feeling horny and she loved to suck me off in a car park, at a picnic spot or, one memorable day, in the outside seating area of a local cafe. I can’t go past that place now without without remembering and getting hard.

I was always eager to repay the favour, and would often sit parked up with her in the car wherever I was dropping her off, bringing her to wet and powerful orgasms with my fingers. She loved the idea of almost getting caught and loved it when I made her come while we were parked up on a busy street, or supermarket car park.

It was one of these times that led to the idea for our long weekend plan.

Jen had sent me a text suggesting a coffee at a place in Hastings near her office. We met for coffee and, as usual, the banter and Jen's sexy suggestions made me as horny as hell. She giggled mischievously, enjoying my discomfort trying to hide the bulge in my pants as I went to pay.

In the car, I’d barely sat down in the seat before she’d unzipped me and bent over to  take the swollen head of my cock in her mouth. Luckily it wasn’t too busy, and from previous experience I had parked away from the busiest thoroughfare. There were people around, but at a safe distance. Feeling safe, I allowed myself to close my eyes and enjoy the sensations as Jen sucked and licked my cock, savouring the tip and stroking the shaft. The sound and vibration of her moans added to my pleasure. I was thrusting into Jen’s warm mouth and she was encouraging me as deep into her mouth as she could handle.

My orgasm was approaching and I let Jen know I was about to come, I felt her mouth move, open around the tip of my cock with my cock lying along her tongue.  I was keen to watch myself spurt into her open mouth but opening my eyes I also saw a courier van parked along Jen's side of the car, the courier enjoying what he was seeing with a massive grin!

Even the shock of that couldn’t stop me and I came in spurts and a series of grunting thrusts into Jen’s open mouth. Jen swallowed and licked her lips looking up at me with a grin. “Did he enjoy the show?” she asked. It seems she’d seen the van pull up, but it hadn’t stopped her.

Jen sat up and turned to the window, which seemed to surprise our voyeur. She laughed and blew him a kiss, before lifting her backside off the seat, pulling down her knickers and bunching her skirt around her waist. All the time looking the courier in the eye, she lifted her knees and spread her legs. I could smell her scent and see her glistening juices. I could swear I heard a faint noise, like a sweet kiss, as her pussy lips parted.

As I leaned in to kiss her neck, Jen massaged her small tits through her blouse, moaning and closing her eyes as she squeezed her own nipples. Kissing her neck I slipped my left arm under Jen, easily slipping two fingers into her wet pussy from underneath. She moaned and ground down on my fingers taking them deeper inside her as the fingers on my right hand found her clit, a hard bud that sent Jen wild every time I circled it, rubbed it and flicked it.

Looking at Jen, I could she was in intense pleasure, heightened by having a stranger in the next vehicle watching and clearly enjoying the show. From the van, sitting slightly higher, I’m sure he had a great view of Jen's wet open pussy as I fucked her with my fingers.

Jen opened her eyes to watch the courier intently watching us back and that seemed to send her to a whole new level of intensity. She ground down hard on my fingers in her pussy as I rubbed her clit. Soon she was bucking and moaning in orgasm, her pussy clenching my fingers and juices dripping down my wrist.

Once she relaxed and opened her eyes, she looked across to our voyeur. She looked disappointed when the van moved forward, as if to leave. Instead, the driver had moved forward and opened his door shielding us from the mall and giving us a view into the front seat of his van. The driver's shorts were halfway down his muscular thighs and he was stroking an impressively large cock.

Jen pivoted slightly, facing the courier more square-on with her back angled to me. I reached around her and played with her tits, while she started playing with herself, opening herself up widely for the courier to see.  It wasn’t long before Jen was coming again.  Watching her lick her juices from her fingers seemed to send the courier over the edge, shooting a thick stream of come out of his van towards us.

Without the slightest awkwardness he pulled up his shorts, gave us a smile and a nod, closed his van door and with a short blast of his van horn he was off.

Jen looked at me with a tired but sex-filled smile. “That was fucking awesome.” she said quietly, but in a very considered way, with feeling. She really meant it. From my grin and my cock now hard again and still out of my pants, Jen could see I’d enjoyed it too.

“If you’re up for it, I have an idea.” Jen said with an excited look on her face.