That's fine. I believe his bio is unlocked ( http://whittremaine.insanejournal.com/4293.html ), I was thinking she could possibly be his third ex-wife, who left him for a woman. They are still very good friends and they have a daughter together. There is some wiggle room with her, the only thing I am really set on is that she left him for a woman and he was completely understanding about it. He even went to her wedding to her partner when Massachusetts legalized same sex unions. Given her age we could tweak the timing of it, or not.
Or we can work out something totally different if you would like. I'm very open to ideas.