User blog comment:RainbowNeko23/Delphi/@comment-27939404-20160910123918

Well, I assume that Bellatrix admired Voldemort so much that she could do anything. JK Rowling has said that she wasn't really in love with her husband Rodulfus Lestrange, she was in love with Voldemort. And as we know, Voldemort couldn't feel love. That was what made his fall. I think he just wanted someone that could make a heir with.