The 29-year-old, who is excited about what her future with Sudeikis holds, thinks the 'Horrible Bosses' star will make a great father to their kids, reported Us magazine.
"(I) can't wait for children. I'm open-minded about how many, but three, which I love, is like a little party. I am not trying to have kids now - there's no strict plan for anything in my life.
"What happens, happens. (Jason's) so good with kids ... I've never before experienced looking at someone and thinking, 'That's who I want to raise a child with,'" she said.
"He was so cool, so funny - I was such a fan of his and had always fancied his speed and his intelligence. He's a brilliant actor with a brain like lightening. I thought, 'I'm not beautiful enough or his type.' I couldn't wait to sit down and hear him talk," she added.