Why did he texted me that he got placed and will earn ton of money and I will not be a part of it and when I said good luck he said that's a lie?

a guy and i were in a casual relationship and we kissed but he was really toxic and not good for mu mental health. he used to emotionally blackmail me and always crying that everyone leaves me and it used to build pressure on me to not to even when he became really toxic. then when i left him because he flirted with my friend, a week after he texted me that he got placed and all and i wished him good luck and then he said that's a lie and after that he said you could've stayed but you left just like my ex. i am tired of his crying about that those exes of his left him.
Why did he texted me that he got placed and will earn ton of money and I will not be a part of it and when I said good luck he said that's a lie?
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