This happened when I (30F) was living in Japan and working at a bank. The workplace was very hostile, but I was good at my job and got the recognition I deserved. One night, while I was staying late to work on something, my supervisor came back to the office to pick up his belongings. Then, I went over to his office.

When I got there, he bent me over his table and slapped my ass. He slapped my ass again, and things escalated quickly, leading to us having sex in his private office. Our relationship was a weird mix of sex and hate. On one hand, he seemed to dislike my success and wanted to "punish" me, and on the other, I loved being "punished" and enjoyed my relationship with him.