Yup

"Holy fucking shit!" Cassidy slaps my chest as I come around the door frame so we are out of view. "I just meant to give a a sensual massage not cum all over your mom's face."

Unsure of if it bothered her or turned her on you look towards the ground. Well you have your answer. Cassidy must have been masturbating while watching you two, there is a small wet puddle on the floor and what little material she has covering her pussy is completely wet.

Cassidy asks. "And the middle part when you guys were talking. What was it that you guys were talking about?"

Only planning to half tell the truth I say. "About stuff I did as a teenager."

Cassidy coyly looks at you. "Like what?" I can tell she is a little excited at the anticipation of what I was about to say.

My face goes all red. "When I was a teenager I used to cum into Melissa's panties and put them back into her drawer so when she wears them my cum was soaking her panties."

Cassidy just stares at me. "That's kinda hot. Well with a consenting person it is. But doing that to your unknowing sister is kinda fucked up."

"I know thats exactly what Chloe said." I exclaim.

"What did Chloe say?"

Cassidy and I turn our heads over to the stairs and it's Melissa standing there is her swimsuit. It seems like she onky heard that last sentence.

I panic. "Um, well. You see." I can't string along enough words to make a sentance.

But before I can explain properly Cassidy comes out with it. "Mike used to cum into your panties and put them back so you wesr his cum!"

Melissa just smiles at me. "Oh I know. I knew the whole time, I just didn't want it to stop cause it really turned me on."

I stammer out. "Wait. Really?" I feel my cock get hard again.

Melissa takes a couple steps toward Cassidy and I. "Yeah, remeber I was a pretty big slut. I knew what cum smelt like... and tasted like."

Before I have a chance to react to that statement the doorbell rings.