Hi KarriesBaby - menage a trois's rarely work out, it takes a lot of trust and understanding on all sides not to mention equal love for all those involved. I think if you stay in this set-up you will come to resent the guy more and more. I would try and work with a therapist to build up the courage to walk away. If the woman you love won't give up being with this man the only person who will end up hurt is you. Asking this woman to leave someone else she loves for you isn't fair for you both. They're clearly happy with the set up so i would leave them too it and go find someone worthy of your love. I wish you all the best.