Dinner with my family

I get a text a few hours later saying that my mom wants us over for dinner tonight if we can make it. I check with Cassidy and she says sure. I text my mom back saying we will be there around 5 or so.

When I finish getting ready I go to the living room to wait for Cassidy. after a few minutes she comes out wearing a low cut tank top that you can see the top of her bra in and the same shorts that she was masturbating in earlier. "Um, isn't that the shorts you were wearing when you came all over the place?" I ask nervously.

"Ok, first I didn't come all over the place, I only squirt when I'm I have something in my ass while getting fucked. And second what does it matter, it's just your mom's place. It wouldn't be the first time she was smelt my pussy juice."

I get a little uncomfortable. "Ok fine, but what do you mean wouldn't be the first time?" I start to get an erection from the thought of her taking two dicks at the same time.

Her face goes beat red. "Oh nothing, just making a joke." She looks down to the ground.

Now I'm rock hard thinking of me being one the guys fucking her. "I don't think it was a joke."

"UGH, fine. I'll tell you but you have to promise me that you won't tell a soul."

"I promise I won't tell anyone." My mind is racing what it could be.

"Well you know on my 18th birthday when I disappeared for a while with that guy?"

I sheepishly answer. "Yeah."

"Well Your mom caught us making out and when she kicked him out of the room we kinda did some stuff."

At this point I'm practically jizzing in my pants. "Like what kind of stuff?"

"Like kissing, sucking each other nipples, fingering each other... she was actually the person she introduced me to ass play." She doesn't look up from the ground.

"Holy shit! You did all of that with me mom?!?!" She looks ashamed with herself. "Ok, I'm not mad. You became an adult and can make your own choices." She looks up at me and gives me a nervous smile. "Besides I'll have to add that to the spank bank." I joke.

"Gross! you like your own mother?" She turns away from me.

"No no no, nothing like that. I was just kidding."

"If you say so." Cassidy sounds unconvinced. "Any way, are you ready?"

"Let me just grab that book you bought me then we can go. You're driving so I can take a good look at it."

"Sounds good to me, I hate your driving anyway."She bounces toward the door and her ass shakes after her.

I grab the book and flip to the second page. both of the tings I wrote all still there. then I get an idea, I wrote in the book. "Women will always tell you what is on their mind if you ask a third time." I put the third time clause in there so I don't know everything if I don't want to know it.