My Sister's Girlfriend Knew It...

Why are girls always playing those silly games? My sister's best friend spent the night over and I creeped inside her room while she was sleeping. I tried to hide but i got caught. She then tells me that she knew it all along and that she's seen me looking at her for ages but never gave me any signs for me to make a move on her. I could have tapped that ass a long time ago... Oh well, at least it's done now.