"He was getting behind her and kissing her neck," a source stated to In Touch magazine.
Sources present at The Viper Room stated that they even left the hotel together to grab a bite at the Chateau Marmont Hotel and then headed straight to Pattinson's house.
"They went into his kitchen, and he put his arms around her. Then he was kissing her neck and talking all lovey-dovey. It was clear they'd been out together before," the source added.
Meanwhile, it was rumoured that Pattinson introduced his new girlfriend at actress Shoshana Bush's party. Pattinson was spotted with a mystery brunette at the party over the weekend.
"At one point, he was talking to someone and she wandered over and grabbed his hand and pulled him to over to near the pool. Their hands were all over each other," the source added. The source also stated that the couple looked really happy in each other's company.
Pattinson and Kristen Stewart split up for the second time after she got back in touch with Snow White and the Huntsman director Rupert Sanders. All hell broke loose between the perfect pair last year when Stewart confessed to having an affair with Sanders behind Pattinson's back. She later apologised, but - it seems - to little effect.
"I judge people on their actions," Pattinson told Australia's Sunday Style. "I don't really care if it's wrong or right, I give them the benefit of the doubt. If they do something I can't be bothered to deal with, I just cut them out.
Ever since he split up from Stewart, he has been linked to a number of ladies including Elvis Presley's granddaughter Riley Keough, Fast and Furious actress Michelle Rodriguez, pop star Katy Perry and his co-star in the Dior ad, model Camille Rowe.
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