The actor, who plays Mike Chang in the comedy series, popped the question to girlfriend Shelby Rabara while relaxing on holiday in Hawaii.
It happened back in October, according to Us Weekly, which means Harry and Shelby are certainly good at keeping a secret!
After the news was confirmed, Harry tweeted a message for fans, saying: "Thank you guys for the well wishes!!... #muchlove."
Harry, 31, and Shelby are thought to have moved in together in Los Angeles last month.
In an interview back in 2012, Harry shared his thoughts on how to make a relationship last. "Keeping your opinion is good, but playing devil's advocate makes you think about what the other person is feeling and why," he told Bullet Media.
"I think it's all about balance and keeping everything 50/50. There's nothing wrong with agreeing to disagree, too—it's healthy. A little drama can be fun. Sometimes when you're arguing, you get an adrenaline rush, which can be a turn-on."
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