She was a married addict, so that rule didn't apply to her.
But it's most definitely there, and talk to your sponsor. Dating is HEAVILY discouraged during the first year of recovery. HEAVILY.
But whatever. You want to date in recovery, while married and going through a D, while still wanting your wife back, knock yourself out.
Be careful with that woman's feelings. She sounds like she is in quite a vulnerable place herself.
I think you just want your marriage to be saved, but you don't want to do the work. And the work it takes is on yourself. And if your M isn't saved, then you don't repeat cycles and deal with the deep stuff.