So... I am generally incredibly opposed to pet names. Not that I myself have had many relationships to base this off of, but hearing other people call their significant others silly things like sweetie, baby, pooky, or what have you is just like... Really guys? Barf.
But, recently I have decided that if/when I ever have a significant other, then Darling would be an acceptable pet name. Now before you roll your eyes at me and call me old-fashioned I will explain why.
Psalm 35:17 states:
Lord, how long wilt thou look on? rescue my soul from their destructions, my darling* from the lions.
* Foot note: Darling is translated to only life.
So, if you call someone your darling, you are calling them your only life!
Call me a romantic (and it would be true), but the first time I read this and saw the translation I had to go "Awwww!" and then tell all the roomies. So there you have it: cute and scriptural. I'd say it's a good one. :)