"Usually a bit of making out"

I reply, trying to sound confident.

"Interesting." Millie says and looks at me with a glimmer in her eyes. She pauses, then continues:

"How far do girls in high school go these days Matt?"

"Well, it sort of depends.." I answer, not feeling sure what to say.

"Depends on what?" Millie asks.

"Well, how much the girl likes you, how many dates you have been on..." I answer.

"I get it." Millie says, her hand suddenly on the zipper of my pants, pulling it down.

"Let's make this like a high school date." Millie says as her hand reaches into my pants, probing around, finding my cock. I close my eyes as I feel Millie's hand touching my cock, and slowly she takes it out of my pants and starts to jerk it.

I breathe heavily as Millie tugs on my cock. We both stay silent for a while, then Millie says:

"This is quite nice, reminds me of high school."

"How?" I say between heavy breaths.

"A man being happy with me just jerking his cock for him." Millie says, increasing her pace of jerking, then continues:

"At my age, men are not happy with just a handjob, at a minimum they want their dicks sucked."

I don't reply, I just keep my eyes closed and enjoy feeling my step-mom's hand jerking my cock. We stay silent for a while, then Millie leans in towards my head, gently biting my earlobe, then whispering:

"You like having your dick sucked Matt?"

That brings me over the edge and I cum in my step-mom's hand.