Rip Hunter
You call him Rippy or Cap.

He calls you Love or Darling

Leonard Snart
You call him Leo or Lenny

He calls you Short Stuff

Ray Palmer
You call him Geek

He calls you Princess

Jefferson (Jax) Jackson
You call him FireBoy

He calls you Sparky

Sara Lance
You call her My Assassin or Assassin

She calls you Birdie

Mick Rory
You call him Flame

He calls you Babe