I never understood why love was such a big deal until I got older. I would say 98% of songs are about love. I think this is because love continues to be an enigma and a bit of an oxymoron.
Love can cause so much joy or heartache. Love makes one stronger yet also vulnerable. In the Bible, there is a famous verse that talks about what love is.
To me, love is wanting the best for the other person. If it means letting go of the person, so be it. Even though it is hard to do so, you want the best for them so you do it for the other person’s sake.