He probably started out “just gay”.....perversion isn’t satisfied by mere repetition of the same old thing. Each act has to be more daring, more fulfilling than the last. Just like drug addition, gambling and thrill-seeking. Human nature, however, these pukes start out with a defective brain that takes the event to the absurd extreme.
That’s the sad story of all sin. Sin never truly makes anybody happy. There’s always a hole in the boat.