Be more romantic.
If you've already got the "significant other" thing on lock, why not surprise your beloved bae with a romantic gesture?
It doesn't even have to be over-the-top or dramatic. Sometimes the best ideas are also the simplest—like when Amy suggested she and Sheldon invite their friends over for brunch. Not only did her beau say he was down for a late-morning get-together, but he also surprised Amy by setting the whole thing up.