Is it normal to lost sexual attraction to your partner after 5 years of marriage?

I've always heard that married couples naturally start having less sex over time, but lately, I've been struggling with a lack of sexual attraction to my wife. We still have sex sometimes, and my libido seems fine—I still think about sex often, just not with her. She's gained some weight since we first got together, but she's still very attractive, so I don't believe that's the issue. About a year ago, we tried an open-ish relationship with another woman, which was amazing for both of us, but after it ended, things started to go downhill. Now, I wonder if experiencing something new made me lose interest in my wife sexually. We still have a great relationship in every other way, but this lack of attraction is troubling. Is this normal in marriage? Do other couples experience this? Can the attraction be reignited after years together?

Is it normal to lost sexual attraction to your partner after 5 years of marriage?
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