I'm now remarried but my ex-wife and I were on vacation in Cancun. We went on a boobs cruise where the women have to give up there tops at the start of the cruise. It was all couples I thought. They asked if any single guys were on the cruise and a ripped tan guy raised his hand. They ended up pulling his pants down and he had a huge cock even limp. I noticed my wife staring at it, but everyone was so I didn't think anything of it. Later after many drinks and chatting with couples I saw them talking. We took a rough wave and she fell. He grabbed her and prevented her from falling too hard. She was laying on the deck of the boat and he was on top of her. They started making out and he started fingering her. Then he moved down and licked her pussy in front of everyone. It was a wild cruise so no one cared. After she came on his tongue I thought that would be the end of it. I was turned on and shocked she did it without asking for my permission.
When we pulled in I was quite drunk and followed her back to what I assumed would be our room. I didn't even notice we went to his room. She sat me in a chair facing the bed and handed me some lotion. He then stripped off her bikini and fed her his fat cock. She sucked him until he came in her mouth and he made her cum on his fingers. I was stunned but super turned on and started jerking my 6 inch dick with the lotion she gave me. After watching him cum in her mouth I thought surely he would need a breather but his 9 inch cock stayed rock hard. He licked my wife's pussy and made her cum again before he worked his fat cock in her. My ex is a small woman at 5' 1" and 105lbs. I was mesmerized watching him stretch her insanely tight pussy open with his thick tool. I think she came after he had it about halfway inside. After he worked it all the way in he pinned her legs back beside her and started drilling her. She was squealing and grunting like crazy making noises I had never made her make before. After a solid 15 minutes he grunted and came deep inside her. I thought "wow I've never fucked her that good, but surely he's done".