I Knew It - What you yell at someone who turned traitor, like they betra

What you yell at someone who turned traitor, like they betrays you and joins the enemy, like Ephialtes in 300.

I Knew It when my friend turned on me and joined the enemy.

I Knew It when my crush liked someone else and I was the enemy.

I Knew It when my mom said I was the enemy and I knew it.