Why do I fuck your girlfriend? Because it gets me hard. The keyword being “your”.
It gets me hard that she is yours, at least symbolically. The symbolic ownership you have of her is only that - titular. And taking what is yours (repeatedly and with abandon in your living room while you are working to feed her) is what gets me off.
Knowing I’ll see you at that BBQ you are throwing this Sunday, shaking your hand grinning at you, while the images of fucking your girlfriend in front of your bedroom mirror flash through my delicious and deviant mind.
She will blush at me from across the yard, wearing that dress I picked out for her. Did you know she won’t be wearing panties? Of course not, why would I bother asking?
That makes it all the sweeter, knowing that she has gone commando just for me right under your nose at the party you’ve spent money on. You are basically feeding me your beer and hamburgers while I pummel your wife in your bed. We will pull back the sheer shades of your bedroom while I do her in the window. I’ll fuck her in earnest, hard, with purpose and dominance while we laugh at you at the grill with the other guests.
So, that’s why I fuck your girlfriend. There is no more powerful feeling of dominance - taking your sweet, loving, “faithful” woman in your own bed while we both mock how kind and loving you are to her.
If you notice how laid back and full of color she is throughout the party, you’ll know why once I tell you I’ve been fucking her for years.
Thanks for the beer, man!