Well honestly I think you do go after unavailable men and maybe you do it subconsciously, not on purpose.

You said you’d only date a man who wants to be married, yet when he told you he has no interest in getting married or even be a serious boyfriend, you still pursued a relationship with him and even became intimate

He refused to date you at any reasonable time of the day being unavailable for you to talk or date, you still pursued a relationship with him

He was unavailable from the beginning (even if you dudmt know he was married) but you still pursued him for few months. You even said you loved him and wanted kids with him even though you barely knew him and he wasn’t available for you at any deep level

It’s good you are done talking to him but I really hope you work with a therapist. I worry that you’d pursue unavailable men again without giving yourself time to process it. I hope good therapy helps