Casper Smart Gushes About Jennifer Lopez at Vegas Residency Opening: 'She Is Wonder Woman'

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Beau Casper Smart is in awe of J.Lo!

Jennifer Lopez
's boyfriend talked to ET on opening night of her Las Vegas residency, where he absolutely gushed about his hard-working girlfriend.

"She is Wonder Woman," the 28-year-old choreographer exclaimed. "I'm telling you, between the number one show, Shades of Blue, American Idol, this, she's all over the place."

Not surprisingly, J.Lo and Smart looked absolutely fabulous at the big show, where Smart said the energy couldn't be higher.

WATCH: Jennifer Lopez Reveals 'Intense' Las Vegas Show Rehearsals: 'We're Close, but Also Not Close' 

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"The adrenaline that starts pumping through your veins and body right before a show, especially a show of this capacity, is indescribable," he said.

The actor also explained his collaborative relationship with the pop star, saying that they help each other out when needed.

WATCH: 7 Times Jennifer Lopez Proved She's a Show-Stopping Goddess

"I just counsel from afar," he explained. "I just help with ideas and whatever she needs from me.

"Of course I pick it apart, just like she picks my stuff apart, and that's what we do for each other, because it's our professions," Smart added. "I really excel in that kind of dance world and creative direction. And she excels obviously in acting, and has been in the business. So she helps me, I help her."

PHOTOS: Jennifer Lopez Gets Justin Bieber Singing Along as She Kicks Off Las Vegas Residency in a Sexy Fashion

Meanwhile, last week J.Lo talked to ET at the TCA Winter Press Tour about the "intense" rehearsals for her show.

"It's just never-ending," the 46-year-old diva admitted. "And it's like, 'Are we going to be ready for Wednesday?' I don't know. It feels like we're close but we're also not close. But we'll be ready."

"I just want them to have a good time," she said of the audience. "I think when anybody goes to see an artist perform in concert in Vegas, they want a great show and that's what I plan to give them. A great show, a great night."

WATCH: Jennifer Lopez Is Not Interested in Remarrying: 'I Need to Be Happy on My Own'

Great night achieved, J.Lo!

One thing the busy celeb does not have any time for is remarrying. Watch the pop singer discuss the idea of marriage in the video below.