Note: This story was dynamically reformatted for online reading convenience.
 
 Email: wainscottinggotgot@tutanota.com
Tags: cheating, cuck, cuckold, humiliation, threesome, cuckolded by
couple, overheard
The hot new couple in the apartment down the hall kept inviting your
girlfriend to dinner with them.  She deferred at first but eventually ran
out of excuses and conceded.  "I'm sure they meant both of us," she assured
you, but you weren't so certain.  They had pointedly invited only her,

right in front of you, repeatedly.

   You weren't too upset since, like you girlfriend, they were both
mathematicians.  Another night of math talk would drive you mad.  You were
spared the social awkwardness when you got called in to work that night.

   You got home late, but your girlfriend still wasn't back.  You could see
light through their peephole, but knocking on the door gave no answer. 
Pressing your ear to the door, you clearly heard the grunts and moans of
exuberant intercourse.  "H'okay, don't want to interrupt that," you
thought, walking away.  Your girlfriend must have gone out for something,
you reasoned.  Strange that she didn't respond to text, though.

   She returned an hour later, waking you up with a kiss.  "Sorry, honey, I
stayed up late with them, drinking and talking."

   "Is that...all?"

   "Yeah, you really dodged a bullet.  They would have bored you to tears.
But I think we're gonna be great friends!  We have a standard
date-uh-dinner night planned each week now.  Don't worry, I said you'd be
busy."