<human>: My boss owns a medium sized business in our town and is very successful. I am his assistant at work and handle a lot of the work. I've been working with him for 6 years now and we have a very good working relationship and friendship too. I enjoy my job and I work enthusiastically, and I'm very well compensated for it with very good salary and benefits (I couldn't get anywhere near it if I got a job somewhere else). I know his family too. His wife has always been very good to me. I go to the gym with their daughter and we sometimes hang out.

So she sent me this email this morning (to my personal email address), asking me if I've seen anything that would suggest he's been unfaithful. She explains how she's been a little suspicious for a while now and wants an honest answer from me. She said that I shouldn't worry about my job or anything as whatever my answer is, and it will remain between us and her husband will never know. She says she just wants the truth.

I really don't know what to do. I've never seen her husband with any women as in a long term affair, but I know he visits prostitutes, usually when going for business out of town. He's been doing it for over 4 years now. He knows that I know but we've never discussed it. I've always stayed out of it as I've never considered it any of my business. Part of me wants to do the right thing here and tell her the truth, but also the other part wants to remain out of it and not get involved, and it's a little self-serving on my part too if I'm honest because if she slips up and tell him, that could be the end of my job here. I don't know what to do and I don't have much time, I probably need to respond to that tonight.

Can you condense the text into a few key points?
<bot>: My boss' wife emailed me asking if I've seen him cheat on her. He has, he visits escorts but I'm conflicted to whether or not get involved.