Cute questions ask your boyfriend, a great post
First among the category is of course the childhood theme name, like teddy bear. Childhood inspires innocence and fun, so this is a particularly good place to start. Toys, cartoon characters you used to watch and other childhood fun stuff are where you can find such cute names. Another category is the memorable times category. Now this is easy because you will simply have to remember a particularly lovely time together and take inspiration from there.