Jill Zarin
saw Ramona Singer's divorce coming from a mile away! 

The former "Real Housewives of New York City" star sits down in a candid interview for "Oprah: Where Are They Now," where she opens up about Mario Singer's wandering eye.

Check out the exclusive video below to see what Jill had to say about Mario's flirty behavior back when she was still on the Bravo reality show:

"It's hard for me to relate to someone who is not in reality. I feel bad about that," she says about Ramona's denial. 

Ramona -- who filed for divorce after 22 years of marriage in January -- reportedly caught Mario with his secret girlfriend in their Hamptons home. 
Clearly, this has been a tough time for the Bravo star.

On Tuesday, Ramona tweeted "This has been the most difficult time in my life but when I see so many messages of love & support,it gives me a much needed smile #Thankful." 

See more from Jill when "Oprah: Where Are They Now" airs Friday, February 7 on OWN!