Kaley Cuoco and Karl Cook Are Engaged -- See the Heartwarming, Tearful Proposal Video!

Zach Seemayer‍
Updated
The actress and her longtime boyfriend have taken a big step forward in their adorable relationship.

Kaley Cuoco and Karl Cook are engaged!

Cook took to Instagram on Thursday to share the news with a touching video of the Big Bang Theory star crying tears of joy moments after the proposal.

"After nearly two years I finally got up the courage to ask her to marry me," Cook captioned the post. "This is the best night of my life and I think the video shows it is the best night for kaley as well."

The sweet, funny video shows the actress -- who was also celebrating her 32nd birthday on Thursday -- weeping and laughing as she holds up the sizeable new sparkler.

"We're engaged!" Cuoco excitedly announces through tears.

"You still haven't said yes yet," Cook jokes from behind the camera.

"Yes! I say yes! I say yes!" the newly-engaged actress yells as she laughs. Cuoco later , with the caption, "Still crying ]]>💍