Just found out my ex lied?

my ex lied about breaking up due to being long distance … he moved to my city in April earlier this year and didn’t mention it to me at all… he also said he didn’t want to be close to anyone due to traa as a kid … and now he has a girlfriend. what should i do? i’m about a year late finding out today but i am upset he lied to me.
Just found out my ex lied?
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