Nick Jonas and Olivia Culpo
09/04/2013 AT 05:00 PM EDT
Call it a love game.
and his rumored girlfriend, Miss Universe Olivia Culpo
, made it clear that they're a couple when they were spotted kissing courtside at the U.S. Open tennis tournament in New York on Tuesday.
The pair – who reportedly met when the 20-year-old co-hosted the Miss USA pageant
in June – were on a double date with Joe Jonas
and his girlfriend, Blanda Eggenschwiler.
The youngest Jonas brother
clearly had a good time at the tennis, Tweeting
a pic of them together, along with the caption: "US Open was so fun. Good people. Good tennis."
Jonas, who previously dated Selena Gomez
, Miley Cyrus
and Australian singer Delta Goodrem, spent time with Culpo's family in Rhode Island at the end of August, even attending church with them.
"They're just getting to know each other," Culpo's mom, Susan, told Celebuzz
. "They're in the beginning stages. So who knows where it goes from here. But they are interested in each other and definitely like each other. Good taste on Olivia's part."