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Kevin Patterson, left, and Antoinette Patterson, a married polyamorous couple, show tattoos they got together as a symbol to their commitment to polyamory in their home in Chester, Pa. on Monday evening, Dec. 4, 2017. (Kait Moore/Philadelphia Inquirer/TNS)

Kevin Patterson, left, and Antoinette Patterson, a married polyamorous couple, show tattoos they got together as a symbol to their commitment to polyamory in their home in Chester, Pa. on Monday evening, Dec. 4, 2017. (Kait Moore/Philadelphia Inquirer/TNS)