Smart has reportedly been playing stepdad to Jennifer's 4-year-old twins with Anthony, but he danced around when asked if the stork theme of J.Lo's new movie had him thinking about being fruitful and multiplying.
"I see what you're doing," he laughed. "I'm not playing your game. ... I for sure want kids in the future. I've never not wanted them ... In the future, yes, when I'm ready and when the time is right."
Lopez recently enthused that another child would be "a blessing."
"If she could get pregnant with Casper," a music industry insider told People, "it would be a happy day for her."
After his red-carpet chat, Smart tweeted that the interview wasn't too "painful," although he reminded everyone he prefers to go by Beau Smart, his given name.
"And it's Beau for future," he told E!'s Marc Malkin. "No more Casper."
We'll try to keep that in mind. In the meantime, click on for plenty more photos of their seemingly unstoppable chemistry ...