Mark Sanchez is turning even more heads than usual these days, cozying up to sexy swimsuit model Kate Upton.
The Jets quarterback, 25, has been spotted frequenting 19-year-old Upton's Flatiron-area apartment since last month, according to a New York Post report.
His visits are usually after games or before practice, and he usually arrives in a chauffeur-driven car.
"They never come in together," a source told the Post about Sanchez's attempts to keep the relationship quiet from the media. "He's always five steps after her."
Sanchez has also tried to disguise himself by wearing a woolly cap.
Meanwhile, another source told the Post that Sanchez and Upton are "just friends."
In the past, Sanchez has been linked to "Sopranos" actress Jamie-Lynn Sigler and the now-single Hayden Panettiere.
Follow Style/Entertainment Editor Julie Gordon on Twitter: @jbgordon