Nervously unsure of herself

"Oh. Jack, I don't do this kind of thing." instead of looking at you, she says it gently as she presses her head against your chest again, snuggling in closer and tighter, allowing your now almost fully hard cock to rub and press against her even more. "Even if I was straight you're still my sister's husband and I could never forgive myself." she says, almost like she was asking herself if she could instead of telling you she couldn't.

You can't think of anything good to say right now, you aren't even sure if you want this to continue but you keep your silence, holding her tightly allowing the seeds of wonder you have planted in her mind to continue to do their work.

"And besides, it's not like I have been with a man recently. I wouldn't even know how to give you what you wanted. I would be so terrible." she says again, and you can notice that the doubt you have implanted in her has now come to fruition as she is trying to convince herself now that she can't do it because she has realized that she really wants to.

"Shhh." you say comfortingly, raising a hand up to stroke her short blonde hair and bring her eyes to yours. "Maybe you shouldn't worry so much about me and worry more about what you want me to do to you." you say, calmly pushing the envelope, planting a soft gentle kiss on her forehead as if an invitation to ask anything of you.

"But I..." she stammers, unsure of herself, of where this is going, startled by the fact that you have just offered to give her what she wants. She sighs to gain her composure and turns her gaze back towards your eyes, peering deep into them, and says...