What's her game???????????

I like this fella I work with. He is really popular with women and loads of them flock to him, he got game and flirts. We were friends for years and very close but I wouldnt be with him until I could trust him. We fought, didnt talk for months, but now we are OK again. Not super close, but we are both keeping lines of communication open, though it is strictly friendly. NOW, this older married woman (who I like likes him and he flirts with her), lately when she sees me, she brings him up. We rarely talk. One day he gave me a biscuit in work, then she came in and he gave her one, but twenty minutes later she brought it up and said 'didn't you take one?' and smirking. Then today she comes into the office and says how he has the ultimate job, all these attractive young women were fawning over him and kissing him etc. I defended him and she seemed odd. But was smirking at me afterwards on the stairs as well. What is her game?