Guilty and Bound - Tied up by their Roommate: A BDSM erotic short story (BDSM stories #15)
Jessica Ackles

Most men would be jealous of Marcus and his living arrangement. He shares a flat with three beautiful girls and close friends, but when they forget his birthday again, he takes the opportunity to guilt them into letting him tie them up. Though initially reluctant, the girls soon start enjoying themselves, and the innocent game soon turns into something far more intense.
“Guilty and Bound” is not suitable for readers under the age of 18. It contains scenes of bondage and BDSM, as well as FF and MF interactions.