“Is love an invention created by humans?”
I don’t think love is created by humans. Love is a name humans give the feeling but love itself could be in other animals nature or instinct. Do we know this though? I’m not sure, but I think that other animals do “love”. Like a dog for example. When you come home from school and your dog comes running up to you wagging its tail, I think it is happy to see you. And if it is happy to see you the dog must like you so is that love?