"The worst night of my life," Lohan told Usmagazine.com.
"I'm a f---ing 22-year-old girl who's in love," she said. "I felt like I was in 'Mean Girls' but worse: 'Mean Girls' was a movie."
Sam split from the starlet after nearly two years together and changed the locks on their Hollywood Hills home as her family sought a restraining order against Lohan in the stormy aftermath of their bitter breakup, according to Us.
Ronson hired a cabal of security guards to keep Lindsay away from a party for her sister at Chateau Marmont over the weekend -- but the two got into a fight at the West Hollywood hotspot nonetheless.
"I'm not a bad person and this is what happens," Lohan said. "I was raised to treat people well, and I'm so tired of this drama."
Each time the Ronson tried to break it off with the starlet, Lohan allegedly threatened to kill herself, sources told Us.
But Lohan laughed off claims that she threatened suicide.
"I'm just really hurt," she said. "The whole situation is sick."
Meanwhile, Lohan's grandmother has publicly reached out to the heartsick actor telling People.com "I'm here for her."
""We're all here for her and we'd love to see her," Marilyn told People. "Me, as a grandmother, I'd like to try and help her out, but she's not here, she's in L.A."
The grandmother said she blames Hollywood's culture for Lohan's constant troubles.
""What happened is that it was too much too fast. And she was on her own too early. She was too young," she saod. "And they get into that party scene. It's very hard for them."