Detecting some jealousy here? Nick Jonas hit the town with big brother Joe Sunday night, grabbing a center table at the W Hollywood for singer Brenna Whitaker's jazz show. Soon after, former American Idol finalists Haley Reinhart and Stefano Langone sat down next to them – and Nick couldn't keep his eyes off of Reinhart. When Langone noticed the attention his lady friend was receiving, he "started making out with her frequently," a source tells PEOPLE. But there was no bad blood: Reinhart "looked like she was enjoying every minute of the attention," the source continues. – Dahvi Shira
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