Bob Saget's widow Kelly Rizzo is getting serious once again in the love department ... 'cause she's now gone Instagram official with boyfriend Breckin Meyer.
On Tuesday, Rizzo took to her IG account, posting the first photo of her with Meyer on the social media platform, showing the smiling couple at the F1 Grand Prix in Miami this past weekend.
In the caption, Rizzo wished Meyer a happy birthday as he turned the big 5-0 and gushed over how he's so "kind, sweet, silly, thoughtful, completely hilarious, handsome, understanding, charming, forever curious, compassionate, witty, warm & wonderful.