Cuckold Chuck (Mistress Moi's Slave Boys #2)
Cleo Peitsche

Her plan is straightforward. Find a hot guy. Cuckold Chuck and--literally--rub his nose in it.
Turns out the sexiest studmuffin around is her ex-fiance. Now Mistress has two repressed men on her hands. One will hit the jackpot, and the other will be chained to a chair and forced to watch.
Steamy short story (approximately 5,000 words). For adults only. BDSM. D/s; F/m; off camera m/m