Kemper, 31, shared the happy news on Conan Wednesday night. Korman was a writer on Late Night with Conan O'Brien from 2001 to 2008. "Michael's a delight, as you know, so of course [my parents] like him a lot," Kemper told O'Brien, who called Koman "a very talented writer."
Koman currently serves as a writer and producer on the Adult Swim series Eagleheart, which is produced by O'Brien's production company, Conaco.
Kemper, best known for her role as Erin on The Office, also co-starred in Bridesmaids earlier this year.
Watch Kemper's interview to see her fiancée dressed as a hot dog (you know you can't resist):