02/10/2013 at 05:00 PM EST
With Valentine's Day right around the corner, love is truly in the air.
and boyfriend Casper Smart shared a romantic dinner on Friday night at Cecconi's in West Hollywood.
Although the couple had some "security-looking" personnel with them, they still managed to "canoodle at the table," an onlooker tells PEOPLE.
Wearing a dress and sequined jacket, Lopez looked "stunning," while Smart kept things casual in slacks and a top.
"They were sweet together and Jennifer was laughing all night long," the source adds.
While there were no huge public displays of affection, the couple sat on the same side of the table and stayed close throughout their meal.
– Melody Chiu