Spears and her on-off boyfriend appeared in good spirits during their outing, as they were seen laughing in the car together.

Britney Spears and Paul Soliz seem to officially be back on after being spotted out together on Valentine's Day.

Britney Spears and Paul Soliz seems to be pretty serious ... 'cause they're hanging out on the most loved-up day of the year -- with Soliz's kids in tow.