Mistress Harley wants to ruin everything that you care about and she knows that it's going to be as easy as it could possibly be since you want it. You love her giant tits and you'd do anything just to see them. It's going to cost you, though. You'll have to forget about everything else in your life so you can focus on her big boobs and nothing else at all.
Mistress Harley knew this guy well and she used that info to humiliate him. She did it with her ruined orgasm fetish. The mistress had fun teasing and turning him on with her hot ass as she knew he loved it. She also let him fantasize about her big tits. And when he wanted more, she instead ruined his orgasm and she made him cry while begging her to continue.