soulmate
when its jus easy and comfortable to b with some one. you dont need to explain urself cause on some level you deeply understand each other. whether or NOT you're in a relationship and even if ur not in the same country you know you are always there for each other...no matter what. 
A bit like LOVE but more precise. The preasure of LOVE is not neccessary in it as its apparent without words!
I cant belive theres only two definitions for this and like 250 (some crap ones) for LOVE!!?
"Me and ... are on the same wavelength man! I love spending time with him."
"what like a soulmate?"
"yeah i reckon"