My first attempt at a threesome unintentionally turned into my first cuckold experience. [cuckold’s perspective]

I had a threesome with my girlfriend and a friend recently. We’ve been together for almost 3 years, and throughout the experience, I felt as though she was leaning toward him for the majority of it in terms of giving and receiving. It really felt like I was more of an observer than an active part of what was happening, and that’s been hard for me to accept. I’m not sure what I was expecting, but I guess I thought it would feel more balanced. i basically felt like a bystander.

I normally wouldn’t mention size, but the difference was so drastic, i felt it had to be a factor. My friend is about 8.5 inches long. the craziest part is, i chose him because he’s a bit nerdy and innocent looking. i had no idea he was hiding that size down there.

I can continue this story in DM if anybody is interested. Thank you