Lindsay Lohan's friendship with The Wanted and possible courtship with band member Max George is getting more serious.

Lohan's acquaintance with the band first came to light when it was reported that some of the group's members were with the actress at the New York City nightclub when she punched another woman in the face and was subsequently arrested. Since her release from custody in the New York Police Department's 10th Precinct, Lohan has spent even more time with the men of The Wanted, which includes George, Siva Kaneswaran, Jay McGuiness, Tom Parker and Nathan Sykes.

Most recently, photographers caught Lohan, George and Parker boarding the tour bus that would take the band from Philadelphia to Boston for a performance at the second Jingle Ball Concert of the year.

CLICK HERE to check out photos of Lohan hanging out with George and Parker of The Wanted as they board the band's tour bus. 

She also hung out with the band backstage at the concert and the radio station behind the Jingle Ball tweeted about Lohan's presence at the event, saying, "@lindsaylohan backstage at #Q102JingleBall where she's hanging with Max and @TheWantedMusic!" 

A new report from TMZ said that while George isn't interested in a serious relationship, he does like Lohan and he is the one who invited her to ride the bus with the band.

"Sources close to Max tell us Lindsay is in Boston with The Wanted for their Thursday night show -- and we're told she got there riding first class on board the group's luxury bus ... as Max's guest," TMZ reported. "We're also told Max is now fessing up he did invite LiLo backstage for the Philly Jingle Ball last night. While Linds hitching a ride with Max is pretty strong evidence she's got her hooks into him -- our source says Max definitely 'doesn't want a girlfriend, and is a single guy ... but doesn't mind having Lindsay around.'"