The 'Gravity' star, 49, who first sparked rumours she was dating the 32-year-old actor when they were spotted enjoying an intimate dinner with friends in March, poked fun at the speculation in order to dodge questions about their relationship status.
Asked if they are dating, the Oscar-winning actress told 'Entertainment Tonight': "You guys are a little behind. We've since married and it started breaking apart, so we separated.
"We filed for divorce, and I hope everyone can respect our privacy. But we're going to remain friends and share responsibility of the farm animals we've taken on, because you just can't abandon the animals."
'Captain America' star Chris, who split from Minka Kelly for the second time in October, previously confessed to having a boyhood crush on the brunette beauty, who has four-year-old son Louis, and kept a poster of her in his bedroom.
And a source claimed last month that Chris and Sandra have become increasingly close in recent months, saying: "They have been talking more than ever and they flirt anytime they spend time together. She's been his dream girl for most of his life, so it would be a fairy-tale ending for Chris.
"Friends are pressing Sandra to just finally give in and take their relationship to the next level. It's just a matter of time."