There are pros and cons to dating someone with the same personality as you. Dating someone very similar to you can definitely promote better understanding at times, especially in the beginning, or “adjustment period” of a new relationship, as another study found.

What is it called when you meet someone just like you?

Someone who looks spookily like you, but isnt a twin, is a doppelganger. The word doppelganger is German and literally means double walker — as in a ghost or shadow of yourself.