Casper Smart uses the l-word, says Jennifer Lopez age difference 'irrelevant'

Casper Smart not only typed the word 'love' in a Twitter message he posted yesterday -- seemingly in reference to Jennifer Lopez but the 24-year-old backup dancer also implied that his 18 year age difference with girlfriend JLo doesn't bother him.

"Age, status, n opinions of others are irrelevant. Our hearts are endless and our souls infinite," wrote Smart. "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!"

Lopez and Smart looked cozy on the set of her new commercial for Brahma beer on Monday. In between practicing dance moves, Lopez and Smart couldn't keep their hands off each other, slipping their arms around each other's back. The two were even photographed kissing. Smart appeared to approve of his girlfriend's dance moves as she shimmied in black leather pants and a tight-fitting top.

But while Smart and Lopez's relationship seems to be progressing quickly, Lopez did spend time with estranged husband Marc Anthony on Saturday, promoting their television show "Que Viva" at the Television Critics Association Press Tour. At one point the two were even snapped holding hands.

Perhaps Smart felt a pang of jealousy.