AceShowbiz -

Robbie Amell and Italia Ricci are engaged. The star of "The Tomorrow People" announced the happy news on Instagram on Wednesday, August 20 by posting a photo of him kissing Italia. The photo was apparently taken during the proposal.

Robbie wrote along with the picture, "She said yes!!!... I think. I can't really be sure. I'm going marry my best friend. @italiaricci." In the picture, Robbie can be seen bringing a bottle of bubbly as he is hugging and kissing Italia. He wears a black suit while his fiance wears a blue strapless dress.

Italia also shared her happiness by posting a picture of her and Robbie posing over sea background. She captioned the picture with, "I'm so lucky." In the picture, both Italia and Robbie wear grey bath robes while bringing drinks.

Robbie's co-star on "The Tomorrow People", Luke Mitchell, tweeted a congratulatory message for the couple on the same day. He wrote, "@RobbieAmell @italiaricci ABOUT TIME!! Haha! Congratulations guys!" Meanwhile, Robbie retweeted a congratulatory message from his friend Nick Nicotera which read, "Couldn't be happier for two of my best friends! Love you guys and congrats! @italiaricci & @robbieamell #family."

Last month, Robbie and Italia celebrated their 6-year anniversary. The "Chasing Life" star took to Instagram on July 19 to share a picture of her and Robbie, captioning it with, "Happy 6 year anniversary to my favorite person in the entire world. I love you so much. Also, you're pretty good-looking. @robbieamell."

Robbie will next play Firestorm on "The Flash", a spin-off to "Arrow" which stars Robbie's cousin, Stephen Amell. The superhero series will premiere on The CW on October 7.