The relationship didn't take anything away from you that you can't replace. Your core is still there. Bruised perhaps, but still there.
I hope that you are doing somewhat better today as opposed to last week.
Take what has happened with this relationship and use it to move forward. Don't even worry, like many do (such as I used to) about "Oh, will there be somebody out there for me? Who will be my other part? How can I exist without 'going for' another 'soul mate'?"