tied up by the unknown voyeur

That day we had gone to a party at night to a musical bar area that was right next to the beach. We had parked the car there, and the environment that day was a bit boring, so we decided to go to the beach for a while. There were couples on the sand, about a hundred or two hundred meters apart, and we decided to join in on the fun.

I was the one who had the idea of going to the car, opening the trunk, and grabbing two eye masks that we have among our erotic toys. My boyfriend asked me what they were for, and I told him I had a game in mind.

We looked for a secluded spot on the beach, away from other couples, which wasn't easy because there were quite a few. We lay down, started undressing, left our clothes inside a small fishing boat we have a few meters away, and put the eye masks on. With our eyes covered, we started caressing and exciting each other.

"Like someone sees us, we won't know" - and that feeling put us both on heat.

We hadn't been like that for more than fifteen minutes when we heard someone's steps nearby, and we got really nervous. The first thing you think is that someone is going to scold you or play a prank or some cop is going to fine you, but we stayed put, which is much more morbid, and didn't remove the mask.

Seconds later, a man's voice greeted us.

"I've seen you from afar," he said, "I find this very exciting, and I'd like to stay here next to you, watching, but don't remove the mask, I want to look at you two with your eyes covered and not know who I am."

We told him it was okay, that we liked it, and he started watching us. We began to caress each other. My boyfriend loves it when someone touches his nipples and caresses his testicles with very fine nails, that excites him a lot, but he doesn't come, and that's how he enjoys it for a long time, and I started doing those things to him. My boyfriend moaned, and he was very excited, and I was getting more and more excited.

My boyfriend hugged me, touched me, and let himself be done. I think the voyeur noticed that, and he asked us if he could give some ideas, and I told him yes.

"I'd like you to touch his nipples while I tie your boyfriend."

He told us that he didn't have ropes or anything to tie us up, and the man told us that he did, and that he would do it. My boyfriend didn't say anything, he was silent, but I knew he would like it, and I told him yes, that he could tie him up.

He didn't add any more comments, and I didn't ask anything either. I just continued, touched my boyfriend's nipples, and I could feel how hard his cock was, and the voyeur started tying him up. I could hear the sounds he was making, and I imagined he was tying my boyfriend up, and it seemed very morbid to me, I was putting my boyfriend in heat, and he couldn't avoid my caresses.

After a while, I asked if he was already tied up.

"I'm putting ornaments, ropes here and there, so it l...