Summer at the Grangers

"I'm okay with it, really. In fact I'm a bit curious myself." You say standing up from the bed. "Do you mind if I try too?"

"Really? Are you sure?" She replies, her tone a bit hopeful.

"Absolutely. You said it's liberating and I can use some of that after the day I've had." You say as you turn away from her and start taking off the top part of your pajamas. "And I've already seen you naked anyway. This way we're even. And by the way your butt is not ugly, in fact it's very nice." You add, taking off your pants and boxers at the same time. There is just a bit of a snag when the elastic of your boxers gets caught on your stiff member.

"Oh, Harry, you don't have to lie." You know that tone of voice and you know she's rolling her eyes "but still that's sweet of you to say." You hear Hermione getting up from the bed and a rustle of fabric when she shrugs off her robe.

You kick away the pants and boxers but don't turn around yet. Trying to think an excuse to explain your little problem that doesn't make you look like a pervert, especially after commenting on her lovely derrière. 

"But anyway." She says as her arms encircle you from behind. "I'm glad I can finally share this with someone outside of my family." Her cheek is against your shoulder. 
You can feel the bare skin of her chest and tummy against your back. To be honest, this is one of the nicest feelings you have ever experienced but it was making much more difficult to calm your penis down.

"Is everything okay?" Hermione asks concerned. She must have noticed you tensing up. "If... if you are not comfortable you can put your clothes back on." The concern gives way to sadness and she lets go of you.

"It's not that, it's just..." You try to find something to say that isn't too bad but come up with nothing.

"Harry please, look at me." She says taking you by the shoulders and turning you around. The problem is that she is still too close to you, close enough to accidentally poke the side of her belly. "Eep." She squeals taking a step back.

"Sorry" You say averting your gaze.

"Is... is that really because of me?" Hermione's incredulous tone makes you look at her. Her wide eyes are pointing right to your groin.

"I told you you have a nice butt." You suddenly realize what you just said and add "Not that I'm perving on you or anything it's just..."

"Harry, it's fine." She says regaining her composure and adopting what you call Hermione's lecture pose number three. The problem is that without her clothes that pose becomes very distracting because with one arm beneath them and the other pushing them from the side it really brings attention to her maybe not very big but definitely present breasts. "It's perfectly natural for a healthy young male to have that reaction to a female that he finds remotely attractive. There are studies that..." You tune her out as you become distracted with how her speech and movements affects her breasts. Especially her rosy nipples that started a bit puffy but became more and more defined nubs as she talked. "... so, it's more like I was surprised that I qualified as attractive for you." She said demurely with a bit of a blush on her cheeks. "But the point i was trying to make is that I've read that if it's not taken care of it can become a problem." She says bringing the attention back to your dick that is still standing at attention. "I believe the common term is 'blue balls'" She trails off before continuing shyly "and since I'm partially responsible I thought that I could lend you a hand?"

"You mean?" You say totally surprised.

"Can I help you masturbate?"