“… you are loved because I love you.”

Variant: Immature love says: 'I love you because I need you.' Mature love say: 'i need you because I love you.
Source: The Art of Loving (1956), Ch. 2

Source: When He Was Wicked

Rodgers & Hammerstein's Cinderella

Source: Life Is Worth Living

Source: 100 Love Sonnets

1950s, Loving Your Enemies (November 1957)
Context: The Greek language comes out with another word for love. It is the word agape. …agape is something of the understanding, creative, redemptive goodwill for all men. It is a love that seeks nothing in return. It is an overflowing love; it’s what theologians would call the love of God working in the lives of men. And when you rise to love on this level, you begin to love men, not because they are likeable, but because God loves them. You look at every man, and you love him because you know God loves him. And he might be the worst person you’ve ever seen. And this is what Jesus means, I think, in this very passage when he says, "Love your enemy." And it’s significant that he does not say, "Like your enemy." Like is a sentimental something, an affectionate something. There are a lot of people that I find it difficult to like. I don’t like what they do to me. I don’t like what they say about me and other people. I don’t like their attitudes. I don’t like some of the things they’re doing. I don’t like them. But Jesus says love them. And love is greater than like. Love is understanding, redemptive goodwill for all men, so that you love everybody, because God loves them. You refuse to do anything that will defeat an individual, because you have agape in your soul. And here you come to the point that you love the individual who does the evil deed, while hating the deed that the person does. This is what Jesus means when he says, "Love your enemy." This is the way to do it. When the opportunity presents itself when you can defeat your enemy, you must not do it.

Source: How to Fall in Love