Kaley Cuoco opens up about engagement

Kaley Cuoco is opening up about her recent engagement to tennis player Ryan Sweeting.

"The Big Bang Theory" star, 27, told "Entertainment Tonight" she was completely surprised by her beau's proposal.

"[Sweeting] actually started a little fight with me and threw me off. I was like 'Oh my God, things aren't great.' He surprised me at the end of the night ... [when] he popped the ring out. It was amazing," she said, speaking from the set of the film "The Wedding Ringer."

The actress also revealed, "From day one I just knew immediately and it's been magic. We have all the same family friends. We grew up with the same people, we just never met. So I kind of feel that I've known him my whole life. I know that it seems a little crazy on paper, but it's what works for us."

Cuoco and Sweeting, who have reportedly been dating for three months, made their red carpet debut earlier this month at the Primetime Emmy Awards.