Olivia's P.O.V.
If there's one person in my life who I can rely on more than anything it's my best friend and sister Demi McKenzie.
We've been super close ever since we were babies, so much so that people used to assume that we were twins even though we look nothing alike.
I know not all twins look alike but still, it's painfully obvious that I'm Tyler's twin, not Demi's and you can tell this because we've got the same hair and eye colour and we've also got the same small birthmark shaped like a half a heart behind our right ears.
My mom used to say that god gave us this birthmark to show that we were each others other half who can never be replaced and I used to love this story but now not so much.
Anyway, even though I was also close to Tyler and Colton growing up, Demi was always t
