My officemate is cheating on her husband! Advice please!?

I have an officemate in her early thirties who had been having an affair with a taxi driver. The worse thing their is that she always talks about her sexcapades even if no one is asking! The position that they do, how they do it ahh!!! I don't want to get into more details. I also met her husband, who happens to be working all day while she's banging another guy. I observed that he is a good provider and so on and so forth. To cut it short he was the ideal husband. Here's when I got really pissed me off. She brought her lover on our teams Christmas party last year! She is still doing it up until now and I don't know what to say to her. I want to yell at her and say "STOP TALKING ABOUT YOUR SEXCAPADE I'M NOT INTERESTED IN IT!!!" or should I request to be transferred to another team.