Cuckolded

You're not sure what to say as Erica makes her way back to your side, Simon's cum still slowly running down her leg.

Though she looks exhausted, drained by the overwhelming sensation of being fucked by Simon's foot of cock, Erica still has a loving smile for you. "I'm glad you enjoyed yourself too."

What?... you only realize it when you look down, but your tiny cock has been leaking pre-cum like a runny saucet for some time now...there's even a small puddle beneath it.

You're dumbfounded as Erica warmly kisses you, acting as if the fact that she just had the most powerful orgasm of her life with another man while you watched was no big problem.

Cuddling in close to you, Erica lets out a small sigh of contentment. "When I realized how much Simon's... manhood was exciting me, I felt worried, that it'd ruin what we had with each other... but then...I saw how excited you were seeing me with Simon."

Erica kisses you passionately. "...I knew that we were a perfect match after all." She places two fingers on your still-leaking cock and tugs it lightly... you can't hold back a gasp as you erupt with one of the most intense ejaculations of your life, your tiny dick twitching madly in Erica's hand as it spurts onto the floor of the van.

...

2 years later. Though your life goes on as normal after your double-date-turned-orgy, it has undergone a few - very significant - changes, primarily relating to your sex life. Though Erica still kisses you regularly, and treats you as a loving partner in most ways...you can hardly remember the last time she touched your penis.

The reason is simple: Erica is your girlfriend right up until anything more serious than kissing is involved, at which point she becomes Simon's woman. Your intelligent, confident girlfriend always seem to be nothing more than an eager submissive whenever Simon drops his pants.

At some point, the cocky asian decided he didn't want your dick making contact with Erica anymore, and your girlfriend has evidently decided to follow his instructions to the letter. No matter how in love and equal you two are in your daily life, Erica has no patience for arguing when it comes to anything to do with sex; what Simon says, goes.

Despite the lack of sexual contact with your girlfriend, you have no shortage of stimulation. Simon seems to enjoy barging into your house at all hours to interrupt what you and Erica are up to, bending Erica over the nearest piece of furniture and fucking her sensless with his enormous cock.

Though it's unfuriating, you usually find yourself masturbating to the sight, a practice which Erica approves of. The main issue is the difference in stamina; after you've blown your load half a dozen times in the span of a few minutes, it's hard to find anywhere in the house that isn't filled with the sounds of Erica and Simon fucking with wild enthusiasm. You even catch your neighbours smirking at you on occassion; they can clearly hear some of what goes on, though you hope that they aren't aware that Simon, not you, is responsible.