
Sue H. answered 08/08/19
Learning Specialist - Tutor and Consultant About Special Needs
"On its good days" is an is an anthropomorphism for love. Anthropomorphism is giving non-living things characteristics of human behaviors. In this case, love has good days and bad days. The bad days would be when someone would "kill for love." Someone might Or they might kill a person they are obsessed with if they think they can't have that person. But most of the time, love has good days. We treat the other person as if they are a treasure, or we would put ourselves in danger to push our own child out of the way of a moving car, or in other words, "die for love." Anthropomorphism is too common in people's writing when it is not necessary. In this passage, though, the author is using it as a literary device to get the point across that love can often consume us for both good and bad.
I hope that helps to understand. Now you can look for anthropomorphisms in other writings!