@healer so sorry for your loss.
Forgive me but if your love left the country to be with a married man, don't you think that must be a very strong or extremely passionate connection. I do not know your whole story, but there is no doubt she must be a very charismatic person since this married guy ended his marriage to be with her. Either that or her lover is absolutely irresistible.
Why settle for something less for yourself, you deserve better. Obviously you have very strong karmic ties to your love, but I do not know if her feeling guilty over your feelings for her will bring her back to you. At the same time do not dismiss other women, no one may take her place, there is no need to either. Everyone is unique and love is limitless and boundless.