How do animals choose mates? Here's a hint if you're not sure: they don't base their decisions to enter into sexual relationships on reasoned, conscious thought. No animal on Earth does this, including, guess who, human beings. The source is literally every scholarly article about human and animal mating practices, and how those animals choose: nothing chooses based on a reasoned or rational, conscious decision. They choose based on limbic instinct, and this is an evolutionary agency, one which is what you religious people and society calls 'love'.
This instinct is what RP breaks down, describes, and predicts behavior based upon it. Again, it's not basing analyses on idealistic notions of 'love', 'follow your heart', etc, and if you use that language, as I said, your conception of, your description of reality takes a religious tone, whereas mine is grounded in rationalism.