Thank you for your time.

This isn’t about papa-katsu (compensated dating in Japan), but I’d like some advice about a relationship. A female senior coworker of mine, who is married, invited me to a group date, so I went to one with three men and three women. Two of the men were married and one was single. Among the women, my senior coworker was married, while the other woman and I were single. At the end, the single man asked for my contact information. We started going out for meals and got to know each other. We still see each other regularly. Recently, my senior coworker started asking me how things were going with that single guy. I didn’t hide anything and told her that we were seeing each other, that he was good in bed, and that I enjoyed spending time with him. Then, a while later, she said something like, “Can I borrow him?” lol Apparently, she told a friend about him, and her friend said, “If he’s that good in bed, I’d want to try him too. Why don’t you ask to borrow him?” So I was taken aback, but I just brushed it off by saying, “Oh, really? I’ll ask him if it’s okay to give you his contact information.” She also made a sarcastic comment like, “Men have to use so much energy to please women, so I never actually get any pleasure myself.” lol Does this mean my senior coworker is interested in him? Is she saying things like this just to bother me? It’s been bothering me, so I decided to post about it. I’d really appreciate your thoughts.