Who's Lindsay Lohan’s New Man?

Fresh from a sober 21st birthday celebration and a fun 4th of July party, Lindsay Lohan is making tabloid waves once more. But this time, everyone’s wondering about the identity of the boyfriend she’s been mentioning.

The singer/actress was joined by ex-boyfriend (and maybe now her current beau) Calum Best at the festivities earlier this week. But there’s another guy that looks to be the one receiving LiLo’s affections.

In all the paparazzi shots we’ve seen, the Mean Girls actress seems to be attached at the hip to a dark-haired rehab resident stud. There’s no word on whether he’s the new catch, but Lindsay isn’t doing much to clarify the issue.

She’s only telling press that there is a man in her life, rather than who the man is. "I have a boyfriend now and pretty soon I'll be going home to LA, so everything will become much calmer."

Is the cryptic talk a way of keeping the press out of her now-sober personal life? Or is she too ashamed to admit she took back cocaine-snorting, hooker-cavorting Calum Best?

Enjoy the pictures of Lindsay attending a late night party in Malibu (July 5).