My husband asked me to let my sister be his “wife” for one night. He said it like he was asking me to pass the salt.

I walked toward the stairs but stopped when I heard their voices drop into a private and intimate register that was not meant for me. I looked through the banister and saw Troy brushing his thumb against Kelsey’s cheek in a way he hadn’t touched me in years.

They were about to kiss in the house I owned when a floorboard creaked under my foot and they jerked apart with guilty expressions. Troy claimed they were just practicing affection for the reunion and I nodded as if I actually believed his pathetic lie.

I didn’t confront them then because I knew from years in the courtroom that you never cross-examine a witness until you have all the evidence. I waited until Kelsey left and then I blocked Troy from entering our bedroom with a firm hand on the doorframe.

“Why did you touch her like that,” I demanded and he told me I was being insane and obsessed with control. He looked me in the eye and denied sleeping with her but his gaze flickered away at the last second and confirmed my worst fears.