SWITCHED - A ROMANCE NOVEL

Meet Harry: seventeen years old boy living in Altrincham with the Marshall family, but has no idea he has been adopted.
Scarlett is his sister, she's ten months younger than him and will find out about the adoption.
Meet Callum: seventeen years old boy living in Lancaster with the Hunt family, but is aware of being adopted.
What if Scarlett meets Callum online and starts talking to him?
And what if they both like each other and decide to meet up: what would happen with Harry?
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"Scarlett?"
"Harry, I told you a billion times not to follow me! Just let me live my life!"
"Harry? I don't know who this guy is. I'm Callum, babe: did you forget about it?"