Goku and Chichi are childhood sweethearts, or at least Chichi thought they were. adults and Goku agrees, however, he thought that a bride was a type of food.
Chi-Chi's personality changed when she became an adult, especially after marrying Goku and having her son Gohan. She is often depicted as a sometimes .
Though we've seen Chi-Chi peck Goku on the cheek when they reunited as adults, we've never seen them lock lips. In fact, we have reason to.
Chi-Chi never forgot about Goku or the promise he made her, even if Goku to promise to marry him in once they were adults, they ended up.
Adult Goku: Goodbye, everyone! Chi-Chi: Goku, you're crazy! You don't even know where he's taking you!.