To me, dating at this stage does sound like it's for you. But not for you to heal. It sounds selfish and vengeful. Why else would you tell W about it unless you wanted her to feel something one way or another.
You still sound quite attached (which is ok and normal), but to me,it doesn't sound like a healthy state to be having dates.
Remember this also. The opposite of being a "nice guy" isn't being a duck. It's just being NICE. My understanding of being a"nice guy" is that it isn't very nice. It's passive aggressive, manipulative and controlling. I wouldn't think being selfish or angry is the opposite of that. I would instead aim for compassionate, empathetic, understanding, etc.
