This is the 4th and final chapter of this story. Read 1-3 first. All characters 18+
Ali
The jetski ride back was pretty uneventful, at least at first. Brit drove, as she was the least drunk in everyone's estimation. Ben sat in the middle, and I was in the back. There wasn't much room so I really had to press my entire front side, from my crotch up to my tits, up against Ben's back. I interlocked my fingers tightly on his flat stomach.
I looked over at Mary's jetski and did a double take. Like me, she was still naked. Sitting behind Ethan, it looked like she had her right hand down the front of his swimsuit. I saw her arm working vigorously and knew that she was jerking him off. My eyes looked up to Bill's jetski, on which he sat between the driver and Chad. They were about 300 yards ahead of us. Mary didn't have to worry about being caught for now.
We were headed toward a tiny and uninhabited but heavily wooded island, and Bill's jetski went around it to the right side, moving fast. I saw Ethan lean forward and say something to their driver and she veered left toward the other side of the island and slowed down. Ethan stood up and turned around, removing his trunks. The last thing I saw before the island blocked our view of them was Mary stepping her leg over his as if to straddle him. We followed Bill and Chad for a couple minutes, and soon saw their jetski slow, and then turn around. He had noticed Mary was gone. I felt compelled to help Mary out here and stall him. As we passed them, he was pointing and saying something. I signaled that I couldn't hear him, even though I knew what he was saying. Frustrated, he made the motion to cut our engine. Their driver did the same.
"Did you see where Mary's jetski went? I thought they were right next to you."
I looked around as if I hadn't noticed and shrugged. "Maybe they left something on the island and went back?"
"We're going to find them."
"Hang on. I think you're dick's getting sunburned, Bill. Did you put sunscreen on it?" I asked.
"Oh shit really? I put some on at first but I guess it washed off in the pool. I guess it is a little red. Do you have any?"
"Let me see, I think so." Slowly I rummaged through my bag, finally pulling some out. I stepped across the 2 feet of water between our boats. I could have just let him put it on but I figured I could buy a few extra seconds if I did it myself. I spent about 30 seconds applying it thoroughly to his dick and balls. His dick was pretty small flaccid, and by the time I was done it was fully erect but not much bigger. It was smaller than Tom's for sure.
"Thanks," he said awkwardly. Stepping back to Brit's jetski, I laughed internally as he struggled to find room to sit down between 2 guys with his little boner. Lara and Sam had pulled up, and I saw Lara giggling too.
They took off at full speed back toward where Mary and Ethan had stopped. I calculated that they had about 90 more seconds to be done. "You think you stalled them enough?" asked Brit. I just shrugged. I had no idea.
We needn't have worried. No sooner had Bill's jetski disappeared than Mary's appeared from around the other side of the island. They caught up to us and cut the engine.
"You guys have fun?" I asked with a smirk.
"No idea what you're talking about," Mary said with a grin. "Where's Bill?"
"Went looking for you. You're welcome for stalling him," I said. She smiled at me appreciatively and blushed.
"Ethan, won't Bill notice your trunks are still off?" asked Brit.
"Probably, but someone got a little excited and kicked them in the water accidentally and they sank." Mary rolled her eyes, grinning.
A couple minutes later, Bill's jetski appeared. "There you are. Where'd you go?" he asked when they approached.
"Ethan thought he saw a dolphin, Mary said. Come on, let's go to the boat."
As we took off, I thought I heard Bill ask behind us, "Hey, why's Ethan naked?"
Tom
I saw several jetskis approaching, holding a mixture of naked people and clothed. Definitely from the island. Probably from the boat anchored about a half mile over, I thought. I wondered when the smaller boat attached to Ethan's yacht would be leaving to go collect Ali and the rest.
I glanced over at Ashley, who seemed to be experiencing a mixture of shame and panic, as if she'd just realized she was naked and covered in cum. She was trying to cover herself with her hands.
Turning back around, my heart nearly stopped. Standing on the deck completely naked and staring right at me were Brit, Ben, and Ali. For a moment, we all just stared at each other with no one daring to move, like gunslingers in an old western. I saw Ben smirking.
"Ali, what the fuck are you doing with these two?"
Ali looked incredulous. "Really Tom? That's what you have to say to me? These are friends I made at the party, who actually happen to be from our hometown. Ethan said they can ride back with us because they are going to the same marina. I might ask you the same question... What the fuck YOU have been doing?"
"But, they're-"
"No!" Ali shouted. "You have no right to complain about anything my friends and I have done!"
I took stock of my situation mentally, and it was bad. I was sitting naked on the pool deck, and my wife had just basically caught me fucking my coworker. There was no denying what had just happened. Worse, she'd arrived naked with my ex-girlfriend and the guy who stole her from me. Still worse, the rest of the partygoers were now on deck, which included my boss and several other coworkers. It was embarrassing already, and explaining in front of everyone who her new "friends" were would only make matters worse.
"Ali, can we speak in private?" I asked.
"Not now," she said. "Ethan's going to show us where the showers are. I'm upset, and I'm covered in sweat and sunscreen. We'll talk later."
With that, Ali, Ben, Brit, Bill, Mary, Sam, and Lara followed Ethan toward the cabin. I had plenty of concerns about the shower situation, but was in no position to voice them.
As they disappeared, I looked around. Jill had returned to the bar. Tracy had stirred the snoozing Rick and was escorting him away. Only Chad, Ashley and myself remained on deck. Chad approached Ashley, who I now noticed was sobbing. I regarded Chad nervously for obvious reasons, but he didn't spare so much as a sideways glance my direction.
Calmly he helped her to her feet and wrapped her in my towel. "Come on, let's get you cleaned up."
I was now alone on the deck.
Ali
There were 3 separate shower areas on the boat. There was a 2-stall setup in crew's quarters with a neck- high wall between the stalls. There was shower connected to a small guest bedroom, and a larger one in Ethan's master bathroom. Lara and Sam took one stall of the crew shower, while Mary and Bill took the other. They were still fighting. As we walked out, I could hear Bill saying, "But that still doesn't explain why he took his pants off."
Ben and Brit got the guest room shower, and Ethan motioned me to follow him. I wondered where this is going as we walked into the impressive master suite. He made a show of removing his fanny pack and dropping it on the bed. I laughed.
"Plenty of room in my shower if you're feeling the need for revenge," he said casually. So there it was, my husband's boss had me naked in his bedroom and had just propositioned me. But he seemed genuine and concerned, not predatory.
"That's tempting, Ethan, it really is. But I think I'm going to just wait on Brit and Ben to get done. I'm exhausted, drunk, and I need to think." Even as I said these words, it was hard to turn down. His penis looked very inviting. "Besides," I added, you must be tired from jetski ride with Mary."