The Humble Lover by Edmund White

From National Book Award-honored author Edmund White, a wildly hilarious and irreverent novel about a rich older man who falls in love with a young ballerino.
Aldwych West, an eighty-year-old modern-day aristat living alone in his Manhattan townhouse, is used to having what he wants. And when he sets eyes on August Dupond, a strong, stunningly beautiful soloist in the New York City Ballet, he decides he must have him. Soon they strike up a closeness that falls between the blurry lines of friendship, sponsorship, and love, and August moves in with Aldwych. But eventually August starts bringing home other men, and a formidable woman in Aldwych's circle named Ernestine also takes a deep interest in the young, enchanting star. Messy entanglements and fierce rivalries ensue, and the result is an unforgettable, outrageous tragicomedy that explores the many layers of love and sexual desire as only Edmund White can.