Lindsay Lohan, who seems to be making money for being a celebutante instead of working on films, has been fighting with her girlfriend Sam Ronson since the start of the year.

Just the other day, Lohan and her DJ girlfriend had another public fight on the streets of Manhattan after attending the New York fashion show after-party.  The couple was scheduled to appear for a DJ gig at Hollywood the following day at Florida’s Hard Rock Casino, but canceled the Valentine’s Day performance due to an ear infection that Sam Ronson suddenly had.

Sam said in a statement, “We really feel bad. I work sick when I can, but unfortunately I couldn’t drive to Miami, so I’m stuck in New York City with doctor’s orders not to fly. Any reports otherwise are false and unfair.”

Of course, just like their past fights, rumors of a break-up follow hours after their lover’s quarrel. Lindsay Lohan denied they had broken up (for the 10th time), explaining, “She’s (Sam Ronson) sick. She’s in L.A. Everything’s fine. I just sent her food from Jerry’s Deli, but she slept through the guys banging on the door. So I was texting her saying, ‘I’m going to the event, there’s food outside the door.’”  The actress also says she’ll be attending Matthew Williamson’s show alone.

Celebrity weight watchers also turned their heads to Lindsay Lohan this week due to her sudden weight loss, but Lohan was quick to defend herself saying, “It’s not intentional.  I eat.  I had my Big Mac yesterday from McDonald’s.  I eat just as much as I always have.”

I think the fights and late-nights are causing Lindsay’s weight loss, but since she and Sam Ronson are being marketed as “the hottest D.J./hosting couple” and are earning good money off it, I guess Lindsay has no choice but to continue the lifestyle.

Check out photos of Lindsay Lohan with Matthew Williamson and at his store opening in NYC earlier in the night. (Feb 15)