Matt Albrecht and Hannah Malyn of the podcast “Matt and Hannah Know it All” join Prudie to advise on your inquiries. First up: I know I should end my friend-with-benefits relationship, but I don’t want to. How do I cut ties with an emotionally abusive friend? I’m in love with my child’s mother. Help! And lastly: am I supposed to tip every time an iPad asks me to? Hear more Prudence by joining Slate Plus: Slate.com/Prudiepod.