I can see something is on your mind sweetheart....you look worried about something?  You know you can tell Step-Mommy anything.  I am here for you.  What is bothering you?  You are worried you won't know how to kiss a girl when that time comes?? Are you serious?  My boy will be awesome at anything you do!!! You are my step-son! But if you are that worried, then I have a suggestion.  I want you to get a good tonight and not have this on your mind!!! You are my amazing step-son and I would do anything for you!  Step-Mommy can show you how to kiss...we can practice right now! Then you will see how good you are and not even put another thought into it!! Ok?  You just pucker your lips and I will come into you...you will feel step-mommy's soft lips on yours!!! That's it!! See? That was easy...now that is a type of kiss to show affection and love, but you can do kisses that really show it....you open your mouth and we touch tongues....let's try it....hmmmm omg...see....you just gave step-mommy goose bumps all over!!!! You're a terrific kisser!!! Let's keep practicing!!! Of dear...honey.....look at your pajama bottoms....is that what I think it is?  Is my boy getting aroused?  Well step-mommy can help you with that...I know you know what that is...but I can't have you going to bed with such a hard penis.  Let step-mommy stroke it a few times....oh my......you like my thong?  Yes step-mommy wears thongs!  I'm not that old yet!!! Oh my, you are making step-mommy horny and wet!!! Here sweetie, get on step-mommy's bed and take off your pj bottoms.  Strep-step-Mommy will work that penis so you cum....Step-Mommy is here for you...I didn't realize a kiss would make my boy so aroused......cum for Step-Mommy :) ENJOY