Husband spills all

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My husband butt dialed me by accident, while telling a co worker explicit detail about us in bed. (Mostly me) I was mortified and embarrassed. He apologized profusely and says he was just "talking shit at work" But now, it's been 3 weeks, I am still not over it, and it's affecting our relationship. Am i over reacting and holding a grudge? Or is he not taking this seriously enough.