The duo have been spotted together on a number of occasions but they always remained tight-lipped about their relationship status.
The "Raaz" star revealed their relationship status on microblogging website Twitter.
"Stating the obvious. Yes, Harman and me are a couple. Finally I have met a person who is a far better human being than I am. Blessed," Bipasha tweeted Wednesday.
The 35-year-old also said she is in happy place in her personal life.
"(I) am in a very happy space in my personal life and it would be fair if people just respect that and not speculate," she tweeted.
Bipasha was previously in a relationship with her "Jism" co-star John Abraham for over eight years. But they parted ways in 2011. John got married to Priya Runchal, an investment banker, in January this year.