Scarlett Johansson & Sean Penn canoodle during lunch!

Scarlett Johansson and Sean Penn aren’t doing much to dampen those romance rumors!

The couple who are believed to be dating following the collapse of their respective marriages were spotted canoodling relentlessly over dinner in Los Angeles.

The duo apparently smooched and stroked as they dined with friends at swanky eatery Madeo.

“They were at the best table in the house, but it’s smack in the center, and Sean was annoyed by lookey-loo diners sneaking peeks,” a source said.

“There wasn’t an empty table to be had but Sean sent a hostess to tell three girls in a corner booth that if they’d switch tables, he’d pay for dinner.

“Sean and Scarlett kissed and petted like their pals weren’t even there.

“When the evening ended and the lovebirds exited, a waiter handed the three girls a check holder – but there was no bill inside; just a note from Sean that read: ‘Thank you!’”

Johansson and Ryan Reynolds, 34, split in December after two years of marriage. In August of 2009, Robin Wright, 44, filed for divorce from Penn. The couple had been married 13 years.

Scarlett and Sean were first linked last month.

“Scarlett first reached to Sean when she was planning to visit Haiti with Oxfam,” a source told Us Weekly magazine.

“She knew Sean was living there in a tent and turned to him for advice.

“Scarlett’s smitten with him.”