My friend is a bit of a dilemma with a married man?

She is really good friends and also works with a guy that she has feelings for. He has reciprocated somewhat towards her, as he is actually the one that started flirting with her and then of course her feelings were mutual so she flirted with him. They've known each other for a few years and the flirting/kissing started about 8 months ago. The feelings have gotten intense so she while in a casual conversation one day, asked him if he was planning on divorcing and he told her that probably wouldnt happen. Since then my friend has realized that she wont ever be with him in the future and all of this for him is just short term. I know that all of you will most likely say that she needs to step away from him but it's not that easy. She works with this guy and her job means everything to her and they are friends and he does claim to have feelings for her, as far as telling her that he doesn't want anything to change between them. Please be kind with your answers. Please offer your imput as to what you would do if you were in this situation. I told her that maybe she needs to have a heart to heart talk with him and let him know that her feelings cannot take a backseat and that maybe she should look for another job, even though I know that can be very difficult for her. Any advice you have so I can help her? Thank you.