“I am beyond thankful to be surrounded by such incredibly fun loving people & puppies. You bring joy to my life. I love you. #HappyThanksgiving #ThankYouToOurFansToo,” he wrote on Instagram and Twitter.
With the holidays in full swing, Scott recently told PEOPLE the couple plan to celebrate Christmas together.
“She is leading that mix,” Scott said of their plans to go caroling together. “She is so into Christmas.”
Deschanel will join her boyfriend’s family, including his siblings, parents and new sister-in-law Annalee.
“We’re good singers and whatnot, but she is a professional,” Scott said. “[This year] it’s going to be a full performance with separate acts.”
In September, a source confirmed to PEOPLE that Scott and Deschanel were dating after they were seen walking hand-in-hand in the Los Angeles neighborhood of Silver Lake, one week after the 500 Days of Summer star announced her split from husband Jacob Pechenik.
Before that, Scott would often show Deschanel some social media love with double taps and flirtatious comments on Instagram.
A source previously told PEOPLE that Deschanel and Pechenik had been separated for several months before the announcement of their split, but that her relationship with Scott was “new” and that “they are having a lot of fun together.”