Christina Applegate’s on-again, off-again boyfriend Lee Grivas was found dead of a possible heroin overdose last week (July 1) in his Hollywood apartment.

Applegate, 36, is said to be devastated by the loss.

Grivas, 26, was a fisherman, skateboarder and aspiring photographer.

Official cause of death is pending toxicology reports. Rumors are swirling that it may have also been a suicide.

A source close to Grivas told The National Enquirer, “Lee also had a long history of drug problems, dating back to his teen years. Christina broke up with him a number of times because of his struggles with getting clean. She loved him, but couldn’t stand by and watch him ruin his life.”