There were speculation that she and Smart are reconciling after their June split, reported Us magazine.
"I'm single right now," she said.
The singer, 45, started dating backup dancer Smart, 27, in 2011. Though they have remained friends and have been seen together in the months since their breakup, Lopez maintained that she is not in a relationship.
"I think being on my own has been really great for me. There was a time where I was just like 'Ehhh, I'm just not going to deal with anybody, I just want to be on my own.' Now I'm getting back into the mix. For right now, I just have no announcements to make," she said.