My sisters and I are all single. Maybe for good reason. You will need to ask our ex-es for references LOL. Our friends sometimes call us the Wicked Witches - not because we are wicked just to be wicked. But we can be really hateful to people who have done us wrong. We tend to say what we think for starters, and can be very harsh with words. Or sometimes we can just be very quite - too quite to the point that the other person becomes dead to us that we can no longer hear them. I think being brutally frank is the best weapon against a clueless boyfriend. We hate being nice when we are hurting. We don't think it's healthy.
It's normal to be bitter after a break-up. I keep telling my friends that they can never be kind to partners who did something terrible to them and took advantage of their being "too nice". Sometimes you need to be evil to be kind ;)
So we were teaching this particular friend how to be evil, because she has a good heart - sometimes too good for her own good, if you know what I mean. Anyway, we might have gone a little bit too far with Evil 101. She's now singing this song. LOL.
Or maybe we have just prepared her for someone much much better for her?
Bygones to the partner. As they say, all is fair in love and war. Haha.