HEE. The beautiful thing about this is that it's completely in character - my very favorite thing about Dwight is that in his world literally anything is possible. Faxes from the future! The CIA wanting him to come to an ice cream social! Vampires being real! It is a world of endless possibility, which is why Dwight is never surprised. So this is EXACTLY how he would respond to Jim proposing. Heeeeeeeeee.