When I was younger, I was hanging out with my first girlfriend and my best friend. She was a fun flirty type and often flirted with him openly in front of me.

He was trying to get into photography and she suggested that he did a photoshoot of us both in various stages of undress.

This progresses and it gets a bit more wild until we're in the bed with him taking photos of us. She suggested that he joins us, and going with the flow I say sure.

It wasn't long before I was watching her with his cock in her mouth which was one of the hottest things I've ever seen. He was a bit bigger than me too... This progresses to him fucking her with my cock in her mouth, until he's fully fucking her with me just watching.

Long story short, I want to see my SO with another guy, or maybe even get cucked. I'm yet to tell her or ask