In an instant I was on all fours beside them. "Shut up and fuck me," I told him, moving Anna aside with a touch when he could not with brute force. I did not remove my eyes from his, however, quite aware how easily he could hurt me. Before he could, I flung myself onto him, shoving his cock into me. This time I growled and he gasped, shocked. He recovered quickly, and began to quickly buck against me, mercilessly sliding his cock in and out with fresh fervor, until I thought I was going to come.
The above are excerpts from "The Triumvirate". The story in it's entirety can be read here:
Part 1 - Part 2 - Part 3 - Part 4 - Part 5 - Part 6 - Part 7 - Part 8 - Part 9