DEAR ABBY: I’ve got a new one for you. My beautiful 16-year-old daughter was interested in a boy her age from school. He was interested in her, too. He told her he wanted to date her, but that he is “polyamorous” and would be dating many girls simultaneously. She told him he’s too young to know what he is yet, and he was just using it as an excuse to date multiple girls, and she wasn’t interested. They are part of the same friend group. He has been acting very hurt, pouty and angry. He told a mutual friend he ...