Is it normal that I got angry PTSD flashbacks of my ex gaslighting and mentally abusing me upon discovering another woman had the same bra size?

As soon as I took it off and saw the label I had flashbacks and asked the woman to get dressed and leave in a not so polite manner…

Is it normal that I got angry PTSD flashbacks of my ex gaslighting and mentally abusing me upon discovering another woman had the same bra size?
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