It was early morning on our small boat docked in a marina where we arrived the evening before. I poked my girlfriend Charlotte with my morning wood and she soon had her hand in my boxers holding my hard cock. We were both in our early 20s and enjoying the summer.

While early, it was already warm, and I had the hatch open for fresh air. We were at the end of the dock away from the other larger boats. Even this early she gave a great handy with long strokes. I paused her and squirt lube on the head of my cock and she lovingly continued.

After a while of this blood I quietly thrust into her hand as she stroked harder, sensing that I was going to cum. I directed her hand and my cock down to aim at my T-shirt. I was in a trance as the spasm hit and the first stream of semen squirt across my shirt.

All of a sudden I heard a squeal, I opened my eyes and right above me looking down at my ejaculating cock was a shocked girl probably our age. She screamed "sorry!!" and was gone. Even though it happened in an instant I swear it intensified my orgasm.

I held Charlotte's hand around my cock and thrust into it without any regard as to where the cum would go. I launched several streams before she pulled her hand away and stuck her head out the hatch. She reached out and came back down with a bill for the night's moorage fee that the girl left.

With a long stripe of cum on her shoulder, Charlotte was horrified at being caught. This left me to massage out the last of my cum and the lessening post-ejaculation spasms myself. We got cleaned up and she asked to go somewhere else as she was too embarrassed to see the marina girl on the dock. I agreed and said I'd pay the bill and hoped that someone else would be working in the marina office. Of course that was BS, it was such a turn on - I really wanted to see the marina girl.

I walked to the office and to my delight, there she was, a tanned and cute brunette. She was the only one working and still getting set up for the day - she blushed when she saw me.

I apologized to her and she apologized too saying she doesn't like to knock and wake people up. She laughed when I said we were already up. 15 minutes earlier this girl actually saw me ejaculate and talking to her made me hard again.

I told her we were leaving, telling her my girlfriend was too embarrassed to stay. She said to tell her it's ok and no big deal. Pushing it just a bit, I joked "that's probably the last one I get for a while!" Marina girl laughed and blushed again and wished me luck.

We left the marina and cruised out into some open water to drift and relax. I decided to get changed into my swim trunks and my gf glanced at my half hard cock as I changed. I told Charlotte that I needed to cum again, and in a slightly annoyed voice she questioned why so soon. I said I didn't know, but I was just feeling horny. She knew what was up, and told me I was on my own this time. I took that at face value and started calmly jerking off while she read her book while wearing shorts and my hoodie about 5 feet away.

I was so turned on from what happened earlier, Charlotte near to me, and by being nude outside on the water. I decided to get the lube again and gf looked right at my hard cock with distain as it bobbed by.

I sat back down and stroked with two hands. She could tell I was getting close and put her book down. I walked to the side of the boat and she watched as spurt after spurt lurched out of my cock and splashed into the water.

Charlotte would never go back to that marina. But whenever I took the boat out without her, I went to see marina girl..