I have never been involved in an open relationship. I think monogamy is harder for some people than others. I have always been able to remain faithful to the same person, although I have been guilty of crushing on others, but nothing has ever gone beyond that. As for what I have seen with open relationships, I have had two different couple-friends that both ruined their marriages via open relationships. One was a couple who the husband found "someone he liked sleeping with more" and the other the wife got pregnant from the "other man" or whatever you call it. I've never seen an open relationship work, but I have seen a whole lot of monogamous relationships fail too! I think that if you are not fully comfortable with it now, you never will be, maybe she needs to talk to a counselor and see why she really needs to that kind of affirmation from other men. Does she no longer feel sexy? Ect... I hope everything works out.