Jennifer Aniston has reportedly a night at a hotel with Hollywood heartthrob Vince Vaughn - fuelling rumours of a romance between the pair.The former 'Friends' beauty is said to have spent the evening at the Four Seasons hotel in Chicago, where her 'The Break Up' co-star Vince is staying. The actress was spotted sneaking back to her suite at the swanky Peninsula Hotel in the early hours of the morning.A source is quoted in Britain's News of the World newspaper as saying: "Jennifer and Vince have become really close since they started filming together.""They are great friends but now it seems things are more serious between them."She was spotted leaving the Four Seasons in the early hours of the morning and clearly didn't want to be seen.

Rumours of a romance have been circulating since the pair were snapped looking intimate on the set of their new movie.However, last month, hunky Vince denied he was dating Jennifer, who split from husband Brad Pitt earlier this year, and insisted the pair were just good friends.

He said: "Jennifer's a sweet girl but she's very vulnerable right now and has been through a really hard time I know people would love it if we were dating, but we're not"Jennifer's spokesperson has also rubbished the rumours

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