<human>: Provide a brief overview of the text.

A female coworker of mine has been dating someone for four years and living with them for a large majority of that time. For a little over a year she has been having a full on affair with someone from her workplace. This year she accepted a marriage proposal from her boyfriend. However, the affair has continued. That's a 25%+ the length of the entire relationship with her fiancé.

She has many issues with her relationship but insists she still loves her fiancé and isn't ready to end things with him. While at the same time she admits even more love to her partner in crime, does romantic birthdays, valentines day, christmas dinners with him, stays over at his house often, basically is with him for as much waking hours as possible. This all takes place while her fiancé is working, sleeping, or else the 'working late' excuse is used.

I know I've kept this very generic but anonymity is important. I'll answer any questions though if things need clarification.

Is there anything I should I do? I'm not interested in telling her partner but she obviously isn't ready for marriage. What advice can I give her to help her wake up and smell the ashes?
<bot>: Friend from work has been fucking the living shit out of a guy she works with for over a year. Physically, and even more so, emotionally. Now she is engaged and is continuing the affair. What do?