Jennifer Aniston has rekindled her romance with Gerard Butler.
The former 'Friends' star and the Scottish actor - who were first linked to each other last September and again earlier this year - were spotted cosying up on the set of their new movie 'The Bounty'.
An onlooker said: "There's definite chemistry between Jennifer and Gerard. They seem to be spending a lot of time together, even when they are not working."
A movie insider claims Jennifer - who was recently linked to her 'He's Just Not That Into You' co-star Bradley Cooper - and Gerard can't bear to be away from each other.
The source said: "Let me put it this way. They're both hot and single! After they finish a scene, they stick around so they can hang out with each other. Neither is in a rush to leave."
When the pair film kissing scenes they are keen to spend time perfecting the clinches.
The source added: "Jennifer will say, 'I think we need to do that again.' She says Gerard's a great kisser."
Jennifer - who recently splashed out $1,000 on sexy lingerie - split from on-off boyfriend John Mayer in March.
