If reports are true, then this will be one of the hottest couples Hollywood has ever seen!! Things are beginning to heat up for Sports Illustrated swimsuit model Kate Upton and NY Jets quarterback Mark Sanchez

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Kate Upton Mark Sanchez

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Mark has been spotted visiting Upton's home on numerous occasions since November, the New York Post reports. The star quarterback is usually seen visiting his curvaceous beauty after games or before practice and on one particular visit was seen bearing gifts. A source told the New York Post, "They never come in together. He's always five steps after her."

Although they appear to be a couple, another source says they are "just friends." Plus Mark was spotted at the Moderne Hotel last week with two other women. And around 3am he checked into the hotel with a "Spanish-looking brunette," reports say. Once the brunette left, a blonde, who may have been Upton, arrived at the QB's hotel room, staying for just over and hour.

What do you think? Are Mark and Kate a couple or just friends?

Photos courtesy of Sports Illustrated & GQ