Brihadaranyaka Upanishad teaches us what is love?

 I din't find s convincing definition of Love other than what Brihadaranyka Upanishad tells us. Here are few excerpts taken from Wikipedia. 

Yajnavalkya's teaching to his wife is no different. At a basic level he is saying that we don't love our spouses or children or wealth, but we love ourselves. A girl is dear to her father because she is his daughter. A man is dear to a woman because he is her boyfriend. A dog is dear to a family because he is their pet. A suit is dear to a man because it is his suit. The love in a relationship comes because of the Self and not because of the inherent quality of the other. In fact, love arises out of an intimate awareness. After all, can we love something we don't know anything about?