You Lose Track Of Time With Them
One of the most obvious indications that mean that you have met this person in a different lifetime is that you lose all conception of time and the days just suddenly become a blur whenever you are with this person.
You have spent so much time with them already that it’s almost like you’ve done this a million times before. Every single conversation and everything that you both do together just seems to make you both want to escape the world. It’s easy to be around them and it’s more than easy to spill your guts to them too.