Is it normal for a girlfriend to bring up my ex’s consistently?

I’ve been noticing since the beginning with my girlfriend that she brings up my ex’s because she feels insecure. I understand this and try to help her but I’ve expressed to her I don’t like my ex’s to come up in conversations all the time especially intimate conversations between me and her. It seems that even after I’ve talked to her about my how I feel about her bringing up my ex’s she still brings them up.

Is it normal for a girlfriend to bring up my ex’s consistently?
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