Just two weeks after the actress publicly called him out for cheating in a series of bizarre posts to Instagram and Twitter, she's now claiming Tarabasov has assaulted her several times, which is what ultimately led to their downfall.
Speaking to the Daily Mail, Lohan claims a scary incident happened last month on the Greek island of Mykonos, where the two were celebrating her 30th birthday.
According to the Mean Girls star, the couple allegedly got into an argument and Tarabasov, 23, took her phone. Lohan then grabbed the Russian businessman's phone and threw it onto the sand.
"Egor drank too much and he went crazy," she claims. Although Lohan didn't go into further detail on what happened that day on the beach, the Daily Mail obtained photos of the feud, which show Tarabasov grabbing Lohan from behind.
"I realize now you can't stay in a relationship just for love," Lohan also tells the Daily Mail. "No woman can be hit and stay with that person if that person isn't prepared to say sorry."
Lohan adds that the alleged incident occurred just a few days after Tarabasov reportedly "strangled" and "almost killed" her on an apartment balcony.
"Egor and I had been out for dinner. We danced, it was fun," she says. "When we got home I went to bed and Egor went out. A few hours later he came back, and when I woke up he was standing over me. He wasn't himself, he was being very aggressive and he attacked me."
"I wanted to do this interview because it's time to tell the truth," Lohan tells the Daily Mail. "There have been so many lies printed about me recently. I've kept quiet for so long but now I'm scared of what Egor might do to me and to himself."
"It's not the first time. That's the problem," she adds. "But this time, someone saw. I didn't call anyone, I've dealt with enough police in L.A. I just left the house and went to the Connaught [Hotel] for the night. I contacted my good friend [Israeli socialite] Hofit Golan who was in St Tropez. She said, 'Get on a plane, come and meet me,' so I did. I needed some time for myself. I've spent the past week fishing on my friend Marco Mavilla's yacht with his lovely family in Sardinia."
As ET previously reported, Lohan -- who met Tarabasov last summer -- was spotted on a yacht in Sardinia, Italy, earlier this month. She was still rocking her emerald green engagement ring, albeit on the opposite ring finger.
"I haven't taken it off, even after all this," she also tells the Daily Mail. "The truth is, I wanted to make things work, but now I'm not sure that I can."
"I need closure," Lohan continues. "I genuinely fell in love with him, but he broke my trust and made me feel unsafe. I know I'm not an angel, but I've tried to fix things. It's down to him now. I had suggested we go for couples' counseling, but there comes a time when I have to put myself first, my family, and also think about my career, which I've worked so hard for. I also don't want to let my fans down by not being the strong woman I have become."
"We planned to marry in Lake Como next May. We should both be in Italy looking at wedding venues right now," she says in conclusion. "All I wanted was to get married and settle down. I've always wanted four kids and Egor and I talked about having a family."