A source told "Extra" that John pulled off the romantic proposal with the help of Bob Iger, the Disney Director of Feature Animation.
Caitlin McHugh and John Stamos at the Saban Community Clinic's 40th Annual Dinner Gala in Beverly Hills, California in November 2016. Stamos made the announcement on his Instagram account, sharing an illustration of a couple in front of Cinderella's castle in Disneyland.
The film concluded with Sebastian from "The Little Mermaid" encouraging John to "Just ask the girl".
"I asked... she said yes!... and we lived happily ever after", Stamos, 54, captioned a drawing of him and McHugh, 31, standing before the Magic Kingdom.
The two have been dating for nearly two years, and based on her Instagram, they're, like, super in love. She just starred in a short film directed by her now-fiance called "Ingenue-ish". "I swear that's him behind the really enthusiastic man", she said of Stamos screaming during the ride.
"We don't want the commentary from the masses about what our relationship is or should be".
According to a statement from Stamos' representative, the actor proposed to his girlfriend at Disneyland.
Stamos was married to model and actress Rebecca Romijn from 1998 - 2005. Fans were happy for the couple, with many wishing them good luck.