Faulmates

We weren't meant to be friends, nor bestfriends because i already had two, they were irreplaceable,

Could we be called lovers?, No never. Never had we ever been close to being "lovers".

Soulmates wasn't just the right word, soulmates are meant to be. But this was never meant to be, it was filled with various problems,

What are we?

A question which may remain unanswered.