It seems Lindsay Lohan and new beau Calum Best have hit a rough patch already. The pair had a public screaming match at NYC's SoHo Grand on Monday night that began in the penthouse and ended in the lobby. "Calum's clothes were torn, and after a few minutes, they got back into the elevator and went back to their room," says a witness. The "screamfest" may have started over Best's slimy behavior at Cipriani Downtown the previous night, when he was reportedly "collecting numbers from all the models" behind Lohan's back. A friend of the Georgia Rule actress was overheard saying, 'All her friends with Calum would go back to London. He's just using her."