From Ice Cold Indifference... To Frantic Hoovering

What the heck happened here?

To keep the back story brief, the Narcissist & I were on & off for 12 years. His last D&D was especially hurtful in that he never broke it off with me. He just stopped speaking to me and started dating another woman. The shock of it nearly destroyed my life and it wasn't until I found this forum that I fell onto steady ground and took some control of the situation.

He had been completely ignoring for about 2 months (aside from a few random, purposefully hurtful remarks). The other day, I sent him a Facebook message to arrange to get a few important things back that are over at his place. It had to be done, but unfortunately it opened up a dialogue between us again. He made a few mean comments about my profile pictures, I shot back with a few mean comments about his mental issues, we went back and forth for a while until I let loose and basically told him everything I knew about narcissism and how closely he fit the bill, and how I KNOW that he knows that he's pathologically ill.

After I exposed him and told him I was moving forward with my life, he never directly responded to the issue, but he suddenly started being "nice" and would send me random, conversational text messages as if nothing had ever happened- when weeks before, he refused to acknowledge my existence! He has never texted me like this before, not even during our relationship! He'll send 4 consecutive texts a minute, talking about concerts he wants to go to, asking for my music recommendations, commenting on current events, asking me to check my email bc he wants to show me a picture of his tattoo... ("it's a cool tattoo, isn't it???" he even asked). He even emailed me a picture of his beard as if I haven't seen it before, or as if it's even something I'd care about!

Before, I would've been sucked right back in and thought, "Aww, he's interested in me again. He really wants to talk to me!" But now I see right through it and that it's just a selfish, pathetic attempt at getting someone's approval. I'm cringing for him.

Finally, the messages were just too much and I told him we really couldn't be doing the text thing and that I need to move on. I wished him well and left it there. His response?

"Alright, but sidenote: What do you think about so-and-so. Is he worth seeing live?"

I reiterated my point once again, and then he responds with a random comment about how two artists that he wants to see are playing on the same night. I haven't responded, and won't.

What the heck?? I'm so confused! My messages were extremely serious, I don't know whether to laugh or be angry that he completely ignored them and insisted on talking about concerts instead. Is this a narcissistic thing? Completely blocking out what the other person is saying and carrying on a completely unrelated conversation? What gives, how can anyone be that ridiculous? I have a high tolerance for weird stuff, but this is just too bizarre even for me.