Friend: That is really your choice. If you mean am I "OK" with it, I would prefer that you not date before the D is final. ---
But, really, this is soooo much a conversation between people who aren't emotionally D. It would have seemed ludicrous to me to check with my XH after we were separated and emotionally D to see if he approved of my dating plans. And, if he had for some reason expressed disapproval, well, too bad for him.
So, I think that if your friend is really serious about a D, he should really suck it up and deal with the discomfort. He probably isn't going to feel great about her dating after the D is final. So what? The discomfort is really HIS problem to deal with, if the D is for real. He shouldn't be seeking her help or support with it. That kind of R is over. Her personal life is her personal life. His problems with her personal life are HIS problems. They don't need to be worked through as a couple, because their is no couple. (Again, this is under what I take to be the *false* assumption that they have made a clear and committed decision to both emotionally and legally D.)
