Where did things go wrong in this situation?

I had been seeing Woman A casually for almost two years. We acted like a couple—traveled together, went to concerts and weddings, met each other’s family and friends—and I usually paid for everything. But she never wanted to commit or define the relationship.

While still involved with her, I started seeing Woman B for about a month. She told me upfront she wanted to date me, but I didn’t want a relationship with her. When she asked what we were doing, I told her she was just a “fuck buddy” and explained that I only take women I want to date out on actual outings.

She asked why I didn’t want to date her, and I sent her a long message critiquing things like her confidence, sexual experience, and how she approaches dating. After reading it, she ended things and didn’t want to remain friends.

I insisted on staying friends anyway. I called her multiple times until she responded, and we eventually had an 8-hour phone conversation where she agreed to continue being in contact. For the next two weeks, we stayed “friends” while still sleeping together, but then she suddenly ghosted and blocked me.

I later saw her at a mutual friend’s place and confronted her about blocking me. She was frustrated and basically told me that I was already involved with someone else and that I should focus on that.

She ended up posting about me on “Are We Dating the Same Guy?” Woman A’s friends sent the post to Woman A, and as a result, Woman A ended things with me too.

In response, I had my cousin post a message in an AWDTSG group threatening Woman B with legal action if she kept posting about me and accusing her of being on my property.

Now I’m trying to understand where I went wrong and whether I should have dated Woman B.
Where did things go wrong in this situation?
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