The "Captain America: Civil War" star, however, understands the notion that marriage is "very romantic," reported E! online
"Well, with every gain there's a loss, right? So that's a loss. You have to choose a path. I think the idea of marriage is very romantic; it's a beautiful idea, and the practice of it can be a very beautiful thing. I don't think it's natural to be a monogamous person. I might be skewered for that, but I think it's work. It's a lot of work.
The 32-year-old actress sees getting hitched as a responsibility.
"I think marriage initially involves a lot of people who have nothing to do with your relationship, because it's a legally binding contract, and that has a weight to it.
"Being married is different than not being married, and anybody who tells you that it's the same is lying. It changes things. I have friends who were together for 10 years and then decided to get married, and I'll ask them on their wedding day or right after if it's different, and it always is. It is. It's a beautiful responsibility, but it's a responsibility," she said.