A Cuckold Relationship

In response to my requests for stories here is a story a gentleman named Robert sent me, enjoy. I had a long term cuckolded relationship. She had a long term Dom "master" and he used to use our sessions to teach us about various cuckolding rituals. On this particular one I was ritually stripped and my manhood ridiculed by both, he instructed her to tie my hands behind my back and kneel. My mouth was used to get him hard a she told me how he was about to fuck my girlfriend and he duly got her on all fours facing me and started to tease her with the end of his cock along her clitt. She soon worked herself into a frenzy of desire begging him to fuck her,telling her he wouldn't until he saw her spank my large balls,telling me my cum was useless to her. he said he would only associate her pleasure with my pain. She soon started to spank my balls softly but he drove her on to squeeze them hard and hurt them as he fucked her faster and harder. my erection had dissipated by them which is what they wanted. no pleasure for me when he was about to cum he told her to wank him off all over my red and swollen balls and cock and he spurted all over them , telling her to rub the cum into them, literally his sperm dominating mine.