05/11/2012 at 12:00 PM EDT
Their hot romance of six months
has hardly been a secret. But no matter how high-profile Jennifer Lopez
might have been lately, she has yet to make much of a peep about boyfriend Casper Smart
– until Thursday night
, that is.
For the results show
, the American Idol
judge went on stage to perform her recent "Dance Again" single, and she did not go alone. Backed up by an entourage of bare-chested hunks, she singled out Smart (with whom she performed a sexy routine) at the end of her performance after he plucked sparkly confetti out of her hair, announcing, "He's so cute."
She then blew a kiss to the audience.
Though speculation rose in March that the two might tie the knot
, the rumor was quickly laid to rest. And while no rings were proffered, last month, for Smart's 25th birthday, Lopez, 42, bought him a truck
as a present.
As she Tweeted, "@BEAUcasperSMART 'Beau has a birthday we're so glad we hope it[']s the happiest Birthday Beau ever has!' #singingtweet. HAPPY BIRTHDAY BEAR!!!"
For much more on J.Lo and Casper, pick up this week's issue of PEOPLE, on newsstands everywhere Friday