Lohan -- Back on the Market?

5/21/2007 11:07 AM PDT
Lindsay Lohan was back on the club circuit in L.A. this weekend without boyfriend Calum Best. Trouble in paradise?

After a whirlwind trip to New York, where the two hit premiere parties, went condo shopping and clubbed almost every night, followed by a romantic Bahamas getaway and a return to the Apple, it appears LiLo is taking some time for self-reflection ... on the club scene. TMZ spotted Lohan out solo three times this past weekend, going to Koi, Teddy's and LAX with her girlfriends and trusty assistant, Jazz.

Is it back to the single life for LiLo?