Jessica Simpson makes out with Tony Romo at friend's party

Singer Jessica Simpson was spotted making out with her new boyfriend - Dallas Cowboys quarterback Tony Romo.

According to a source, the pair, who have been dating since November, were getting very cosy at pal CaCee Cobb's 30th birthday bash at Hollywood hot spot Teddy's on December 1.

The source told Us weekly magazine: "They were all over each other on the couch, making out."

"They were on top of each other! It was a little bit much for a public place," the witness adds. "He was holding her close and she wasn't paying attention to anyone else."

The source also revealed to the magazine that 27-year-old Jessica is "crazy" about her new man, also 27, "and gushes about how sweet he is."

Apparently, Tony's also generous too - Jessica was overheard that night telling pal Ken Paves that Romo (who recently signed a $67.5 million contract with the Cowboys) picked up the Teddy's check for their entire 12-person party.