Sofia Vergara & Nick Loeb
07/26/2012 at 06:00 AM EDT
of a possible engagement, Sofia Vergara
and Nick Loeb were ever the lovey-dovey duo during a recent date night in the Hamptons.
Hitting up Georgica restaurant with a group of five friends, the Modern Family
actress and her man "held hands and danced and kissed throughout the night," an onlooker tells PEOPLE. "They were dancing on banquettes and stayed until about 3:30 a.m."
The source says the pair, who ordered bottles of Stoli Elit vodka, "looked very much in love." – Lesley Messer