Lindsay Lohan is grieving the loss of her restaurateur ex-boyfriend, Harry Morton.

Lohan, 33, paid tribute to Morton on Instagram after learning of his death over the weekend. He was 38 years old.

“Best friends. Best life,” she captioned a black-and-white photo of her with Morton.

They dated in the summer of 2006.

Lohan’s mother, Dina Lohan, responded to the “Freaky Friday” star’s post, writing, “So sorry my lil princess [prayer emoji] he’s always with you, watching over you baby [heart emoji].” Her father, Michael Lohan, and siblings also expressed their condolences in the comments of the post.

The Pink Taco founder died at his $25 million Beverly Hills estate on Saturday.

“Harry’s family is devastated. They believe his sudden death is related to an unforeseen medical issue, but it is too early to say,” a family source told Page Six.

Morton’s cause of death hasn’t been released.

The Los Angeles County Sheriff’s Department also confirmed that Beverly Hills PD is investigating his death.

A Pink Taco spokesperson said in a statement that the company is “saddened by the passing of Harry Morton, the founder and former owner of Pink Taco. Harry was a visionary and restaurateur ahead of his time, and his contributions, both professionally to our brand and personally to those he worked with, were numerous.”