I have laid down an ultimatum.
She has a week to stop clinging to Lad and whining whenever he won't put her ahead of me, his family, and his band/close friendships. If she doesn't, I am putting an axe on their relationship.
I am starting to think that, on the romantic side of being open, we would be better off finding someone we're both interested in. Who demonstrates maturity.
I'm so glad I'm not that interested in openness as a way to find a second love to augment Lad and I. I have Techno Sex God, who is disinterested in the romance thing with me, to ensure my high libido doesn't drive me nuts. That is all I need.