A model who confessed to bludgeoning his fashion-journalist sugar daddy in a Times Square hotel and castrating him with a wine corkscrew also choked the naked older man and stomped on his head, breaking a bone in his neck, say court papers released yesterday.

The argument between the star-crossed lovers on vacation from Portugal erupted Jan. 7 when Renato Seabra, 20, told Carlos Castro, 65, that he was only in the May-December relationship for the money, sources said.

“I’m not gay anymore!” Seabra claims he yelled before leaving Castro cowering on the floor of their 34th-story room at the InterContinental Hotel, on West 44th Street.

A worried-looking Seabra wore white hospital-issue pajamas and folded his lanky frame into a blue plastic chair at yesterday’s arraignment from Bellevue Hospital’s jail. He was ordered held without bail.