Ever met someone that you could swear you have known forever

So have you ever met someone that you could swear you have known forever or felt like you have known them from a past life? Or do you ever dream about someone before you met them?

This may sound unusual but I know a few people that really make me...

wonder if I did not know them from before.

at sight only... sometimes you see a situation and then you said, I think it happens before.. or I think I've met you before... one story I don't know if it is correct.. One grand grandfather met a teenager who's face and figure is like his girlfriend on his old times... that was weird...

I've had a dream where I meet this random guy who looked vaguely familiar, then I woke up and forgot about the dream.A few hours later hes the new kid in my 3rd period English class.When I saw him my head started to hurt for a lil while and I remembered my dream. It was years ago back in high school, but it creeped me out so bad I still remember it.Its still creepy when I think about it now.
does that fit as an awnser?

Yep...if its like de ja vu then yep...And drams aswell I've had too many to count, just little things that I notice that I've seen before, its like I'm viewing my life from outside the square, if that makes sense
Once I had this dream...The dream went on for 3days, I actually had One Dream over Three days, hard to explain, One dream that consisted of three days, I slept and woke in my own dream three times freaky freaky

Yeah. I feel like some adult friends I've known forever. Sometimes, I dream about someone who I've never met before and then the next day, I meet them at school! It's weird.