A married co-worker and I had been getting "friendly" at the office either before or after hours for about a month. She let me know she and hubby were spending the weekend at a resort a few hours away, her to relax, him to play some golf with some work buddies. I decided to surprise her and booked myself into the same resort without telling her. I checked the tee-times so I'd know when Hubby would be absent and for how long. I "ran into" her at the bar and she was nervous, but excited. We went for a walk on one of the many lakeside trails, one thing led to another and I got her down on her hands and knees, flipped up her short sundress and started fucking her doggy-style. As we both got close to cumming I could see a pair of mature ladies walking a small dog along the path, heading straight for us. Jen wanted to stop, but I kept pounding her. I could feel her cunt muscles clenching my black cock as she started to climax. The two ladies were pointing at us now, open-mouthed, but not turning away. That got me cumming too and I emptied a heavy load deep inside Jen. We hurriedly got ourselves off the ground and with as much dignity as Jen could manage we walked past the ladies and back to the resort. I'm sure they could see my jizz running down Jen's leg as we walked past....