Lindsay Lohan
Lindsay Lohan confirmed she is dating Russian business heir Egor Tarabasov in MarchSuzanne Plunkett/Reuters

Lindsay Lohan and Egor Tarabasov were pictured kissing on a luxury yacht on Sunday in Antibes, France. The singer/actress was also spotted wearing a 5-carat emerald engagement ring reportedly from Tarabasov.

The Mean Girls actress was rocking a backless swimsuit with her red hair let down. Later, she was seen riding a jet ski.

The 29-year-old actress and Tarabasov are said to be engaged after dating for eight months but this has been denied by her spokesperson. However, Page Six earlier reported that "She [Lindsay Lohan] didn't see it coming" when "he [Tarabasov] popped the question with a 5-carat oval emerald ring".

"She was saying how much she loved it and he went back and secretly got it," a source told the tabloid paper.

On 11 March, Lohan's mother Dina told ETOnline: "We love him Tarabasov. He is a sweetheart. My other children and I love him. We know him well."

"I have even FaceTimed with his mom," she said. "He is just so sweet, and they are so happy. Everyone is so happy."

"I'm so happy that Lindsay has found true happiness," Lohan's father Michael told ETOnline when he and his wife attended Duran Duran concert at the Barclays Center in Brooklyn, New York, on 12 April. "It's written all over both of them."

Lohan confirmed that she was dating the 22-year-old Russian business heir in March. She told The Sun: "I do have a boyfriend and he is a great guy."

A-List Insider: Chris Brown and Nia Guzman fight over daughter, Jamie Vardy weds Becky NicholsonIBTimes UK