My Sister Swears Her Husband Is Cheating. She Has a Devious Plan for Catching Him. It Involves Me.

Care and Feeding is Slate’s parenting advice column. Have a question for Care and Feeding? Submit it here. My sister “Jenna” and her husband “Grant” have been having some friction in their marriage over the last year. It stems from Grant being flirty with other women, leading Jenna to suspect him of cheating on her. He denies anything is going on and says he just enjoys giving women compliments and they enjoy receiving them. He has allowed Jenna to go through his phone and email. She has found nothing, but...