I suggest that you try a Retrouvaille weekend to try to resolve your differences, see the website www.helpourmarriage.org for dates and locations. I hate to say it, but this is why "thou shalt not covet thy neighbor's wife" or the corollary- your friend's husband, has been a rule just about since we had rules of conduct. I wish you luck, but she is cake eating big time. You need to make her choose between being married and being single. The rest of us don't get to do both, and neither should she.