Jennifer Lopez and Casper Smart at Cirque Du Soleil

Jennifer Lopez met Cirque Du Soleil stars from their show O in Las Vegas last night. She's in Sin City filming American Idol but decided to take the night off to see a show with boyfriend Casper Smart. Jennifer and Casper seem to be going strong, and he's even spoken out about their 18-year age differences. Casper tweeted, "Our ages are mere reminders of the hours logged on this earth and the precious time remaining. . . We should all honor our time here by indulging our passion and dreams. So, close your ears and open your hearts; Love and be happy!" J Lo later retweeted his sentiments to her 4.3 million followers.

American Idol returned for its 11th season on Wednesday night. However, the debut failed to post the impressive ratings seen in the past. The drop in Idol ratings isn't a complete loss, though. J Lo and her cohosts Steven Tyler, Randy Jackson, and Ryan Seacrest are still winning their primetime time slot.