But such has been the case for three sets of total strangers who ran into each other and, at least for most of them, instantly felt a connection.
'I was like, I think that's like my twin!' Jasmin told Inside Edition of Matty who along with having similar orange-colored hair is also a student like her at the University of Southern California.
In OJ Smith and Crystal's case, it was after OJ walked into a clothing store Crystal was working in that she started staring at her like a deer in headlights.
'She was helping me out, to find a dress, and I just kept staring at her like, “oh my God,”' she said.
'I'm like who's this girl that's staring at me?' Crystal added with a laugh.
Today they're now close friends even able to laugh at the time one of their boyfriends mistook the other for his girlfriend.
OJ recalled him once gently grabbing her arm before she pulled it away to him saying: 'oh I thought you were Crystal!'
Run in: Jasmin and Matty, both students at the University of Southern California, ran into one another at a school function and couldn't take their eyes off one another 
Coincidence: Francisco and Josh not only work in the same office together but bought similar looking glasses and wear similar scrubs to work But as if things couldn't get any weirder - or 'coincidental' as Josh and Francisco like to put it - one set discovered each other after both working at the same job together and coming to work in the same scrubs.
'I was in denial,' Josh said describing his reaction when asked if he was shocked by Francisco’s near mirror-image appearance.
'He was just a guy down the hall. I didn't think he looked anything like me until people started talking about it,' he said.
Chance meeting: OJ Smith, pictured, and Crystal met at a clothing store Crystal was working at when the pair ran into each other He calls it just a 'coincidence' they took on the same line of work and a 'coincidence' they bought similar-looking glasses.
But Francisco laughs thinking about how their boss often mistakes them in the hallway.
The three sets made an appearance for Inside Edition this month after contacted for photos by a photographer hoping to make a book of doppelgangers around the country. -UKDaily Mail
