Stamos and McHugh acted as colleagues this year while completing a film together, "Ingenueish", which Stamos directed and McHugh starred in.
Stamos hadn't been too public about his relationship until previous year, when during a visit to "The View" he noted he was dating someone.
"This girl I'm dating she loves this song, 'Disney Girls, ' " he said.
The couple began dating approximately one year ago and Stamos has not been shy about gushing over his love during talk show appearances over the course of their relationship. According to People, John Stamos made a short film highlighting romantic moments from various Disney and Pixar films, ending with a scene from The Little Mermaid before popping the question.
He then whisked her to 21 Royal, where they celebrated with their families. "We don't want the commentary from the masses about what our relationship is or should be".
This will be the second marriage for Stamos, who was married to Rebecca Romijn from 1998 until 2005.
In any case, congrats to the happy couple - we anxiously await the magical, slightly obnoxious, animation-inspired nuptials.