Robert Pattinson and Kristen Stewart Show Public Affection

After months of back and forth with Twilight co-star Kristen Stewart, Robert Pattinson was spotted with his alleged leading lady in London, showing just a bit of public affection.

“He had his arm around her, holding her close to him and she was leaning into him,” an insider who was at the Marquis of Granby pub revealed to OK! of Rob and Kristen on Tuesday night.

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The vampire duo made a pit stop at the Westminster bar, where a Burberry party was being held upstairs, but stayed outside with a group of friends for most of the evening.

“They were outside, sharing each other's cigarettes, talking and kissing,” the witness exclusively explains to OK!.

ROB AND KRISTEN: WERE THEY REALLY READY TO GO PUBLIC?

And although the insider claims that, “They were not wanting to make a big show of kissing in public,” Rob and Kristen definitely seemed pretty cozy together.

“They seemed really into each other, there was definite chemistry between them,” the source gushes of Rob and Kristen’s night out on the town.

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After an hour or two of chatting with friends on the street, Kristen left in a silver Mercedes at 11:30 PM and Rob opted to hitch a ride with a security guard in a separate car as he tried to stay out of the spotlight in a beanie.