My Uncle Jack didn’t speak or write on love and marriage very often because he felt he didn’t have enough experience in those areas to contribute meaningfully to the body of thought on them. He was wrong, which is a statement I won’t often make about him. The following is from The Collected Letters of C.S. Lewis, Volume III:
There are two kinds of love: we love wise and kind and beautiful people because we need them, but we love (or try to love) stupid and disagreeable people because they need us. This second kind is the more divine because that is how God loves us: not because we are lovable but because He is love, not because He needs to receive but He delights to give.
Those two love-categories—natural love, and godly love—are a slightly different take on love-categories, that reduces the usual three to their least common denominators. And I find it a point so well taken that I can’t add to it. Wonder of wonders!