From J.Lo & Marc's Italian kiss to Kate & Lance's touchy-feely tennis game, see the couples adding sizzle to the season. By Serena Kappes
Updated: Wednesday Jul 09, 2008 | 06:00 PM EDT
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Gossip Girl stars Penn Badgley and Blake Lively enjoy the New York City nightlife – and each other – during an evening out June 17. "They have just as much chemistry on set as off," the pair's costar Lydia Hearst tells PEOPLE.
Plus: See the couple's romantic Mexican getaway!
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