Sweet Surprise! Happy Birthday Card for Husband: Let there be cake! And then they partied. That's the typical birthday story, why not mix it up some? Send your fantastic and adorable husband this birthday card. It will be a sweet surprise in his inbox, and a reminder that you are thinking about him all day long. Your husband's birthday doesn't have to be ho-hum-do something new and send him this tasty, little birthday card! What a birthday treat!