“The logistics of being with another actor are challenging,” the new mum tells the May issue of Cosmopolitan.
“There has to be a real understanding of how you share your time, especially when two people’s careers are going at the same rate.
“Or even if one person is more successful than the other, that also proves challenging. There may be a competitive thing.”
Scarlett and Ryan began dating in 2007 and married in a quiet ceremony the following year as both their big-screen careers were taking off.
But the golden couple split in 2011, and Scarlett later married French art director Romain Dauriac, while Ryan walked down the aisle with actress Blake Lively in 2012.
“My divorce [from Ryan] was a very lonely thing,” Scarlett told California Style magazine in 2014. “It’s like the loneliest thing you’ll ever do, in some ways.
“I’ve had a fair amount of time to process the experience and go forward. I continue to get to know myself better as I get older, and that helps me in my relationships.”
Although Ryan is again not mentioned, Scarlett also tells Cosmo about being in relationship with someone who didn’t appreciate her enough, revealing the moment when she finally decided to ditch him.
“Long, long ago, I had someone in my life who was forever unavailable … but, like, so attractively unavailable,” says Scarlett, who has also dated Justin Timberlake, Jared Leto and Benicio Del Toro.
“You have to get to your breaking point … rock bottom is the moment when you’re like, ‘I’ve lost myself. Why am I standing outside this bar at 1:30 in the morning texting while my friends are inside? Or taking a taxi to see him at some ungodly hour? This isn’t me.’”
The actress adds, “That is the moment you’ve gotta cut it off. Otherwise, it will keep coming back, suck your blood.”
Meanwhile, the 31-year-old star of Captain America: Civil War has also opened up about her jet-setting lifestyle, as she splits her time between her native New York City and her beau’s home in Paris, a move she insists is the best decision she has ever made.
“We’re both street rats,” she explained of their similar upbringings.
“Being a New Yorker is a part of your personality, and he grew up in the heart of Paris. Just surviving the urban jungle is character building. It stays with you forever.”
Scarlett is keen to continue raising their daughter Rose in a big city because she doesn’t think moving to the suburbs is a life she can adjust to.
“It seems wonderful to be raised in a natural setting, but I wouldn’t know how to do it.
“A big city would always draw me back.”