Move her hand onto your thigh.
From Create Your Own Story
You keep an eye on Adam, who seems to be glued to the movie, as you covertly move Kara's hand onto your thigh. After a rather gory scene, Kara turns into your side and you rub your hand soothingly on her back. However, you breathe harshly when you feel Kara's hand rubbing your clothed crotch to full hardness.
Your eyes nervously jump to Adam, who seems to be engrossed in the movie. Kara unzips your pants and grabbed your penis and rubbed the head with her thumb and a small sigh escapes your lips which made her smile as she continued to pump your erection.
You decided to go balls out and reached to touch Kara's breast,at first hestitantly but then with a firmness that made Kara moan but thankfully Adam didn't hear it though you did notice that the gory scene was coming to an end and with much regret you point it out to Kara, who frustratedly lets out a sigh before returning her attention to the movie which left you in a qundary of sorts as you complemented your options when you catch Kara's eye and she dips her head towards her bedroom before standing up and going Adam that she needs to go to her room for a moment, Adam just nods his head before returning his attention to the tv. You wait for a few seconds before standing up yourself and tell Adam that you need to go to the bathroom.
