If you feel like you’ve known someone you just met for a very long time, it might mean that they’re someone from your past life. Generally speaking, this sort of thing happens very infrequently throughout life, and you shouldn’t overlook it when it does.
When it happens, it’s best to speak to an experienced past life reader who can use their expertise to help you figure out if this person you just met is someone from your past life. The person may have a message for you, or they may be trying to reconnect with you for some reason.