Kiss her

I smile at her, say "well, only one way for you to find out" and lean towards her and kiss her. Millie kisses me back, and sticks her tongue down my throat.

I put my hand on the side of her neck, pulling her face closer to mine, and our tongues meet. I kiss Millie like this for a while, then I slowly slide my hand down onto her shoulder, run it across her chest, and then it is cupping one of her big tits. I hold it there for a while, then I start to gently squeeze her tit.

Millie is starting to breathe heavier now as she is getting more worked up, she moves one of her hands to my stomach, she rubs it, then slowly she slides it into my pants. She just leaves her hand there for a while, then all of a sudden she uses it to grab my dick. She just holds my dick for a while, then moves her hand along it's full length, it is like she is measuring it. She must have come away satisfied with its size, since she starts stroking it gently.

I move my hand down to Millie's shorts, but as I am getting ready to start touching her pussy, a door slams upstairs and a female voice shouts: "Hi mom!"

Millie freezes, moves away from me, puts her fingers to her lips telling me to be quiet, then shouts back: "Hi Ashley, am downstairs, my friend Matt is in the garage fixing the gears on my bike!" Then grabs a baggy sweater of the side of the sofa, guess she does not want her daughter to wonder why fixing bikes involve big tits and tight tank tops, then runs upstairs.

I can hear some mumbled voices from upstairs, but then I hear one set of foot steps going upstairs, and one set of footsteps coming down.

Once Millie is back with me downstairs, she whispers in my ear: "Go to the garage."