And now it has been claimed that Amanda Seyfried and pal Justin Long have taken their friendship to the next level.
According to reports the acting pair are dating, but are taking things slowly.
'They recently started hanging out more, going on date-like activities. They're both busy … but they're seeing where it goes.'
Another source added that the hot new Hollywood couple 'have a similar sense of humour'.
Man magnet: The 27-year-old, pictured on Tuesday, had dinner with Jonathan Rhys Meyers the following day
Justin has made no secret of his love for Amanda's talent - and perhaps more - in Lovelace, her latest movie, in which she portrays porn star Linda Lovelace.
The 35-year-old tweeted on Saturday: 'Adjectives don't do justice to @AmandaSeyfried's fearless + transformative perf in #Lovelace (though I would've been better) -just go see it.'
Taking their friendship to the next level: Amanda is seen arriving at the New York premiere of Lovelace. She was later seen 'getting cosy' with Justin.
Following the premiere – which was also attended by the likes of Zachary Quinto and designer Zac Posen – Amanda headed for a late night after-party at the Refinery Rooftop lounge.
But those hoping for a chat with the film’s leading lady were left disappointed when she opted to spend the entire evening cosying up with Long.
‘They were hanging out at the Rooftop Refinery til closing time,’ a source told the New York Post. ‘They looked cosy in a corner.’
Old flame: Amanda previously dated her Mamma Mia co-star Dominic Cooper for three yearsAmanda has previously enjoyed relationships with Ryan Phillippe and British star Dominic Cooper – who she met while filming 2008 musical Mamma Mia!
Justin was also involved in a high-profile romance with actress and director Drew Barrymore before they split in 2010.
Elsewhere the actor is set to romance co-star Anna Faris in new Chuck Lorre sitcom Mom.
‘Poor b*****d doesn’t know what he’s in for,’ Lorre Told E! of Long’s character in the show. ‘But he is going to be her first shot at a meaningful relationship in this new chapter in her life.’
Blast from the past: Justin is seen her with former girlfriend Drew Barrymore, who he dated until 2010