The Oscar winner, 42, and his model girlfriend, 24, reunited at Jimmy Fallon’s private after party at L.A. hotspot Delilah on Sunday night, and the duo weren’t shy about showing off a little PDA.
“Leo was in a booth next to the deejay and basically gazing longingly into Nina’s eyes,” a partygoer tells PEOPLE exclusively. “At one point, she leaned into him for a cuddle. They were very relaxed together.”
“Jon and Sarah shared a cute moment, hugging each other and congratulating each other on their mutual success,” says another source. “Kate went around the room to congratulate the nominees and winners, but kept close to her girlfriends.”
Around midnight, Fallon “hopped on the mic and gave a brief speech congratulating all of the artists who were in attendance and were nominated or won,” adds the source. “He gave a champagne toast and told everyone to enjoy the rest of the night.”
Guests dined on deviled eggs, chicken sliders, shrimp cocktail, roasted chicken and skewers, and sipped on champagne and custom Golden Globe cocktails.