he said that he was planning to have a conversation with her and end it properly, and they hadn't seen each other for almost three months at that point anyway.

Last night, I asked him again if he'd ended it. It's been on my mind because me visiting him is coming up soon, and I wanted to be sure it wasn't still ongoing. His response was that he'd spoken to her and they were going to continue as fwb.

You really didn't. I read it as "he said he hadn't seen her in months anyway and was going to end it, then after that conversation he said they would continue" which is why I put the specific emphasis on it being a development.

Because if you haven't slept with someone in months, and it's a friendship style arrangement? It's easy to say former and that he didn't suggests an ongoing thing which he is oddly being unclear about.

It's also odd to me after everything I put that you focused solely on that, but whatever.