Mila Kunis and Ashton Kutcher snapped cuddling during lunch date

"They were seated on a couch on the same side of the table and Mila was running her hands through Ashton's hair."

Mila Kunis and Ashton Kutcher. Pics/AFP

"She had her elbow resting on his back and couldn't stop playing with his hair and rubbing his shoulders. He leaned in and whispered to her and kissed her cheek. They were holding hands," the source said.

The That 70s Show costars have been hanging out since late April doing everything from road trips to dining out in public.u00a0"They seemed to feel safe and were being open with their affection," the source added.