The "Suicide Squad" star tells Net-a-Porter.com she had always struggled to truly open up to partners in past relationships - until she met Ashley.
"I'd never truly let anyone in before, for fear of them leaving," Cara explains. "I never really trusted people, or felt worthy of it, and I always pushed them away."
"She's (Benson) the first person that has said, 'You can't push me away. I'm going to be nice to you, I love you.' I'm just like, 'Wait, so all I have to do is just let you be nice to me? Why have I never done that before? OK! ."
And she admits to being so smitten with Ashley she goes out of her way to make the relationship work - even when they are both far away from each other.
"Long distance relationships are always tough," she adds. "We make it work, though. We have to. And it definitely makes me a better, happier person."