Right in the face

Having no desire to have a face or mouthful of cum you point the head of Amber's cock away from you while continuing to jerk her off. Her cock was pulsing in your hand and it reminded you of a gun: primed and ready to go off

Amber let's out a loud shriek as orgasms. Her vagina contracts and tightens on your fingers as she cums, covering the hand with her juices. Her cock however explodes like a geyser, the spray hitting you directly in face, plastering you with a face full of cum. With a disgusted grimace you wipe the cum of your face with your forearm.

Amber finally comes down from her orgasm and sinks to the shower floor beside. She shoots you a winning smile.

"Welcome to the family bro" Amber says with a wink "We need to keep 'us' a secret. Before you came back we agreed that we wouldn't let you in on 'you know what', let alone having having fun in the shower"

Seeing the concern in her eyes you agreed. "Fine, but I have plenty of questions."

Amber visibly relaxes and smiles. "Yes I suppose there are a few things I need to explain to you.Come to my room after breakfast. Leave the tv on in your room and lock the door. I'll tell you everything you want to know".

You both get out of the shower and dry off using towels. Amber puts her tiny bikini top and bottoms back on and wraps a clean towel around her groin, presumably to maintain the impression that she was hiding her secret from her step brother. She leans in and kisses you quickly on the lips and exits the bathroom, leaving you with your head a whirl of information, questions and emotions as well as a rapidly returning erection.