Mila Kunis and Ashton Kutcher are reportedly "seriously obsessed" with each other.

The two stars are believed to be dating, having been spotted kissing in public and enjoying several dates over the last few months.

Although they haven't confirmed the romance, the pair recently attended a baseball game in Los Angeles with Mila's parents.

"[They] kissed several times and Mila would cover their faces with his cap," an insider told Us Weekly. "It was really cute! Things are going really well they're seriously obsessed with each other."

Mila and Ashton have known each other since they appeared on TV programme That 70s Show.

The actor apparently got along famously with his girlfriend's mother and father, Elvira and Mark. The group were spotted singing along as songs were played and enjoying some of The Los Angeles Dodgers team's merchandise.

"They were loving Dodger Dogs and pretzels," the source laughed.