Lesbian Relationship Challenges Support Group
This community is for those who are in a gay marriage, and the unique challenges that may be had in a same-sex relationship. Find support and talk to others in a same-sex marriage, and get advice from the experiences of other members.
I would be straightforward with her and tell her that if she needs to work out her feelings for him, then she needs to take care of it before she can commit to a deep and meaningful relationship with you. It's up to her to tell him to back off, as hard as that may be for her. If she can't do it, then there may be something else going on there for her. I know that it is REALLY HARD - I am doing it now. You might lose her, but if she can't decide between two people, you don't really have her anyway and you deserve a partner that is emotionally committed to you alone.