Cameron is your half-brother who was born a couple years after you when your mom had cheated on your father. You both live within your mother's home, hating each other.

...

You and Cameron raced to the bathroom to see who would be the first to use the shower. Unfortunately, Cameron won by getting there first and quickly tried to shut the door, but you pulled on the knob - It turned into a tug o' war between you and him.