Rumi very consciously made himself and his poetry a bridge between cultures and between religions. There is nothing exclusivist about him. He includes everyone in his embrace. He was, and is, a healer of whatever might separate us.
God loves human beings because of the fullness of the divine beauty that they display and their resultant ability to recognize God's beauty. God then asks, as any lover would, that they love him in return.
What's the only country that officially celebrates World Poetry Day? I'm betting you would never guess Iran.