My boyfriend of a couple months upset that I mentioned my ex to him now he doesn’t want to talk to me was I wrong?

He thinks I have feelings for my ex and I don’t I told him this many times I’ve only talked to him about my ex like twice I don’t compare them either I’m not seeing why he would want to break up over this I wasn’t trying to hurt his feelings
My boyfriend of a couple months upset that I mentioned my ex to him now he doesn’t want to talk to me was I wrong?
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