The quarterback has been spotted at Upton's Manhattan apartment several times since November, according to a New York Post spy. "They never come in together. He's always five steps after her," a source told the gossip column "Page Six." He was also spotted bringing a gift into her building earlier this month.
Another source says they are "just friends."
Our question: Who is Kate Upton? We're not surprised the 19-year-old is popular with the guys, given her buxom and curvy figure. It turns out she was named Sports Illustrated's "Rookie of the Year" in the 2011 swimsuit issue.
So, where did she come from?
"I got scouted when I was 12, but I didn't start modeling then, but it was in my mind," Upton told AskMen.com earlier this year. "I started doing research and started getting interested in it. So when I turned 15, I went to Miami and went to an open call and was signed that day, and here I am today."
She's also an accomplished equestrian, but is focusing on modeling right now.
"I don't know where I want my career to go right now. I'm just letting it play out and seeing where it takes me. That's what makes it exciting — letting it all unfold."
Dating a quarterback has to be one of the perks of the job.
Sanchez, 25, reportedly likes younger girls — he was spotted with 17-year-old model Eliza Kruger and 21-year-old Scream 4 actress Hayden Panettiere earlier this year.
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