There is also no evolutionary purpose to the in love feeling lasting longer than it takes to produce offspring. Sorry, but nature is far from romantic. Nature doesn’t give a fuck about making you feel endless butterflies for the same person over decades.
In Romantic Relationships, You’re Either a Spark-Chaser or a Long Burner.
Sara Lynn Michener

Like getting a driver’s license. It would be interesting to teach people who want a long term relationship the difference between the chemically aided “early phase” of a relationship (neurotrophins, low dopamine) and long term relationship chemicals like Oxytocin.