Hello.. I am 28f. On recent vacay, me and my fiance we were staying at an adults-only boutique style resort. On the first evening of our stay, we decided to relax in the hot tub to get our body relaxed from travelling . As the sun was setting and most guests left for inclusive supper, leaving just of tow us in the hot tub.

An attractive older man, maybe in his 50s, came over and asked if he could join us. My fiancé, of course him being him, a bit naïve and over friendly, said of course and started chatting.

The guy struck up conversation with us, mainly with me asking about our plans and I could tell he was really into me, sneaking glances at my cleavage from my bikini top whenever he could. I Feeling a bit reckless and flirty already 3 wine glasses down, I decided to play along. As we chatted, I let my hand drift over to his thigh under the water, giving it a squeeze. He tensed but didn't protest.

My trusting fiancé was completely oblivious as the guy snuck repeated looks at my cleavage, teasing me under the bubbling water with his hands as he kept him busy with some tech conversation.

At one point, the guy asked my fiancé to grab another round of drinks for us. As soon as he left, the guy quickly untied the strings of my bikini top from my neck, that caused my top to fall down exposing my breasts.

He immediately began fondling and squeezing them as I leaned back, I reached under the water and grabbed his throbbing fat hard cock, stroking it firmly. He groaned softly and whispered dirty things in my ear, as I worked him, kneading my breasts with his free hand. I could feel him getting close, so I pumped harder and faster, bringing him to the brink. Just as he began to climax, spilling his seed into the bubbling water, I managed to snatch my bikini top, quickly tying it back in place just in time for my fiancé's return.

He handed us our drinks, completely clueless about the steamy encounter that had just taken place right under his nose. The older man and I shared a secret smile, both of us getting a thrill from the clandestine cuckold action my fiancé had unwittingly enabled. We continued chatting and flirting with the guy for a while longer before he left, my fiancé still totally in the dark about my sexy secret.