Don't see anything in pet names cos i use them a lot for everybody without necessarily meaning it.

Guy friends,cousins,brother,etc etc all get called by my pet names for them. It's usually something generic;sweetie,love,baby etc etc.

I have this friend who i always call the loff of my life,the only meat in my stew,the only Smirnoff in my fridge,the last 10k in my account etc etc.