A man raped a woman in a Gramercy bar after luring her into the bathroom to snort cocaine with him, court documents charge.

Brenton Maughn-Tulloch, 30, allegedly assaulted the 22-year-old victim last Saturday at about 1 a.m. at Beauty Bar, a swank nightclub on East 14th Street.

Cops arrived at the club a half-hour later to find the suspect still lingering at the scene and arrested him on the spot.

Maughn-Tulloch, who had already been facing charges for drug possession and credit-card fraud, was charged with first-degree rape, officials said.

Maughn-Tulloch is being held on $5,000 bail.

At his arraignment, the district attorney asked the judge to set bail at $150,000.

Staff at Beauty Bar declined to comment.