Wrong or not really?

The story behind this message is long but I'll shorten it up. I'm 21 years old and I met this guy who was 35. we met at a local bar and we exchanged numbers. Started talking and met back up in person the next day at a park. We talked and got to know each other a little more. Around the third time we came together we were talking and something told me to ask why he is single. He was beating around the bush and what not and basically it finally came out that him and his "ex" of 8 years are still living together, still having sex, still sleeping in the same bed YET he's single 😱..... oh ok! RIGHT. My dumb self decided to stay and keep pursuing him. As time went on I felt like he was sneaking around and I was the side bitch. He kept trying to manipulate me into thinking she knew about me and that she even encouraged him to go on more dates with me. Well after a while I got fed up and broke the whole thing off because something just didn't feel right. We went 3 months without talking and he pops back up and tries to swindle his way back in. And even says she is no longer living there it's been 3 weeks since she's been gone apparently. 3 weeks is not a long time considering I met him the beginning of last year and he told me she was leaving MONTHS ago. But anyway he texted me, am I wrong for this response?

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