By Breaking Celebrity News Staff

Mixing a little bit of pleasure with business, Jennifer Lopez and her boy toy Casper Smart spent four hours Saturday in dance rehearsal.

The lovebirds then went to Cafe Roma in Beverly Hills -- Arnold Schwarzenegger's fav eatery -- for a replenishing lunch.

Lopez, 42, and her 25-year-old back-up dancer are reportedly getting ready to perform Dance Again on the American Idol stage next week.

In her video for the song, Lopez and Casper steam up the screen -- and then some.

As Breaking Celebrity News previously reported, one critic even called the video, which features a simulated sex orgy, "skanky!"

There's been no word yet if they'll tone it down for the live performance.

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