After dating for multiple months the couple have decided to take some time apart, but have not had a specific break up, E! News reports.
"There hasn't been an official 'split' but Nina and Glen have been taking time apart," one insider told E!.
"Nina just wrapped on a project and is about to start another and her schedule has been a huge part of it. They haven't been spending much time together since the end of the summer."
WHO's sister publication PEOPLE confirmed the actors were datingn in July.
Powell's acting credits include Hidden Figures, Ride Along 2, The Expendables 3, and the now-canceled TV series Scream Queens.
The pair had been rumored to be dating since January after ringing in the New Year with friends in Texas. In addition, that same month, Powell was spotted at the Los Angeles premiere of Dobrev’s film xXX: Return of Xander Cage and they also attended a Golden Globes after party together.