Montana, 30, who had an on-and-off relationship with reality TV star Khloe Kardashian, met 43-year-old actress through fellow celebrity P Diddy, reported People magazine.
"They met through Diddy and have been hanging out," says the Montana insider. "They're just getting to know each other and are having a good time," a source said.
Lathan, who is busy promoting her new movie, resisted the question about dating Montana during her appearance on a radio show.
"You know, I don't talk about my personal life. Let's put it this way. I am dating," she said.