Since I received such a warm response on this one-shot, I've decided to open it up and add chapters every once in awhile. :) Enjoy!

The morning brought a wave of guilt and shame so strong Sansa thought she might faint. What in the seven hells had she been thinking?! She had sexted with Tywin Lannister. She had had phone sex with Joffrey's grandfather.

And now she was wet at the thought of doing it again tonight.

Scolding herself for being such a stupid, stupid girl, she flopped out of bed and made her way to the shower, hoping she'd be able to put this out of her mind as she sat through summer classes today.

Several hours later, in the middle of an economics seminar, she received a text that made her stomach flip all over again, while her pulse raced in excitement.

Tywin: Good morning, Sansa. Sleep well?

She bit back a smile, shot a quick glance to be sure her professor wasn't watching (he wasn't, Mr. Selmy was still waxing on and on about the economic collapse in 2008), she typed out a reply.

Sansa: Good morning, Tywin. Yes, in fact I woke up quite well rested, thank you for asking. And yourself?

Tywin: No, as a matter of fact, I did not.

Sansa: I'm sorry to hear that. If you'd like to share, I'm all "ears". J

Tywin: I was haunted by thoughts of smooth pale skin shimmering in crimson and gold lace, as it happens.

Sansa flushed crimson, herself, and shifted uncomfortably in her seat when she began to feel the familiar ache pulse between her thighs. Swallowing thickly, and feeling like she was completely in over her head here, she tried to think of something flirty and sexy to send in reply. Another vibration from an incoming text interrupted.

Margaery: Hello, earth to Sansa? Why are you blushing about the housing collapse?

She flicked her eyes over to where Margaery sat across the lecture hall with her eyebrows raised and a smirk on her lips. Sighing, she bit back a small grin and texted her back.

Sansa: If you must know, I'm texting someone ;)

Margaery: Details! SPILL. Joffrey? Someone new? You can do better than that spoiled brat and you know it (unless it is Joffrey and then yay you go girl!).

Margaery: WHY HAVE YOU NOT RESPONDED IT'S BEEN 30 SECONDS.

Margaery: WHY ARE YOU BLUSHING AND SHAKING YOUR HEAD NO TEXT ME BACK THIS INSTANT YOUNG LADY.

Margaery: WHY IS TEXTING IN ALL CAPS SO MUCH FUN?

Sansa: STOP YELLING AT ME I CAN'T TELL YOU WHO BUT I NEED HELP.

Margaery: YOU KNOW I'VE GOT YOUR BACK GIRL. I WILL WEEDLE IT OUT OF YOU EVENTUALLY BUT FOR NOW I'LL SETTLE FOR HELPING. WHAT'CHA NEED GIRLFRIEND?

Margaery: I'm going to stop yelling now by the way because I think Mr. Selmy caught me giggling :D

Sansa: OK… So… I'm texting this guy and I need help being flirty and sexy without being slutty.

Margaery: OMG YOU ARE SEXTING?! AHHHHHH!

Margaery: OK, I'm composed now. What did he say that you're stuck on?

Sansa: He basically said that he couldn't sleep because he was thinking about me in lingerie and OMG what do I say?!

Margaery: Well, what do you want to say?

Margaery: Also, HOT.

Sansa: I want to say something that is provocative but classy, ya know? He's very… sophisticated. And I want to sound like a lady and not a slut but I also want it to be flirty. OMG I think I took too long bc he just texted again!

Margaery: AND?!

Sansa quickly flipped over to the thread with Tywin.

Tywin: Should I expect your text later this evening?

She flipped back over to the thread with Margaery.

Sansa: OK I might have left out the fact that we sexted last night and it was so amazing and we made plans last night to sext again and now he's asking if I'm going to text him like I said OMG.

Margaery: Say this. And don't gape like a fish you'll give us away. I think Mr. Selmy is on to us because apparently it's suspicious when you giggle about subprime mortgage lending? :D

Margaery: Yes. Is there anything I could do tonight that would help you sleep better? ;)

Sansa: I CAN'T SAY THAT.

Sansa: I'm sending it now.

Sansa: Yes. Is there anything I could do tonight that would help you sleep better? ;)

Margaery: Say it to your mystery lover you idiot not me. But I'd accept a crotch shot if you're offering :D hahahhahaha

Sansa: I will kill you OMG.

Double-checking this time to be sure she was on Tywin's thread, she sent the text.

Sansa: Yes. Is there anything I could do tonight that would help you sleep better? ;)

Tywin: Yes. When you get home for the night, you will strip down and put on the green and black lingerie, and nothing else. Then you will re-read our texts from the previous evening, but you may not touch yourself or do anything to bring yourself relief until I tell you to later.

An incoming text from Margaery had her flipping back to that thread.

Margaery: WHY ARE YOU BLUSHING LIKE THAT?! WHAT DID HE SAY?!

Sansa: I seriously can't even repeat it but I want to go home and crawl into bed and also simultaneously hope a hole opens up and swallows me whole.

Margaery: Tell me this instant or I will not take you out for lunch and give you a crash course in sexting.

Margaery: JK I will but tell me NOW woman.

Sansa: He said something along the lines of telling me to undress when I get home and re-read our conversation.

Margaery: OMG he's like giving you the green light to masturbate. Who is this sexual god and where can I find one?!

Sansa: Not exactly …

Margaery: ? Explain immediately.

Sansa: Ugh ok here's what he said

Sansa: "Yes. When you get home for the night, you will strip down and put on the green and black lingerie, and nothing else. Then you will re-read our texts from the previous evening, but you may not touch yourself or do anything to bring yourself relief until I tell you to later."

Margaery: I repeat. SEXUAL GOD. FIND ME ONE NOW.

Margaery: Say this. Do not edit it copy and paste. NO, you may not edit it. SEND IT NOW.

Margaery: But if I were to say, slip my hand down the front of my jeans right now in this lecture hall, teasing my fingers into my panties, that would be allowed?

Margaery: SEND IT NO IFS ANDS OR BUTS.

With a blush so strong she was quite certain her cheeks were literally on fire, Sansa copied over and sent the text.

Sansa: But if I were to say, slip my hand down the front of my jeans right now in this lecture hall, teasing my fingers into my panties, that would be allowed?

Tywin: You would like that wouldn't you, naughty girl. You'd lightly press into the circle of wetness dampening your panties, trying to bite back a moan while your breathing slowed, tracing and teasing like I taught you last night.

Tywin: Then, as you shifted in your seat and tried desperately not to draw attention to yourself you'd slip one finger under the lace and through your folds, finding your clit and stroking it while you imagined my tongue.

Tywin: You'd shudder and quake as you came in your seat thinking of me and panting my name, forgetting for the moment that you were in the middle of your class. And when you looked up and saw everyone watching you'd start to drip all over again, wouldn't you, dirty girl?

"OH MY GOD YOU'RE SEXTING T-" Sansa whipped around, clutching her phone and clamping her hand down over Margaery's mouth. When had class let out?!

Scooping her bag over her shoulder Sansa dragged Margaery out into the hall and finally released her mouth. "TYWIN LANNISTER?!" She whispered, voice so high and tight she nearly squealed.

Sansa was quite certain you could see her red cheeks from space at this point. "Yes," she whispered quickly, looking around to make sure no one was looking. "Look, it all started yesterday when I accidentally sent him pictures of the bathing suits I was trying on rather than you. We started chatting and then things got out of hand last night and now I am pretty sure I am going to die of frustration because did you read what he just sent me?!"

Margaery was grinning like a cat that got the cream as she snatched Sansa's phone and finished reading. Her smile grew wider and wider until her eyes popped open and her mouth dropped into an "Oh". Sansa saw as she started typing, and as she squealed and reached to take her phone back Margaery took off at a run out the door before spinning around triumphantly, having hit send.

Sansa: I'd soak right through my thong and my jeans, and I wouldn't be able to take my finger off my clit because the thought of people watching knowing I was getting off thinking of you would just be too much. I wouldn't stop, I'd circle and circle and circle my clit, not bothering to bite back the moans, until I shuddered and screamed your name as I came.

Sansa's jaw was on the floor when she read what Margaery wrote. "Margaery Tyrell. I cannot believe- how could you- UGH!" The vibrating phone indicating an incoming message had both girls giggling as they tucked their heads together and read his response.

Tywin: I just had to mute my phone so that the Braavosi delegation didn't hear my growl.

Tywin: I'm going to punish you later, naughty girl.

Without even hesitating, Sansa typed out and sent a response, as Margaery read over her shoulder and her on with delight.

Sansa: Will you spank me? Have I been bad?

Tywin: If I had my way I'd bend you over my desk, spank your bouncy arse until it was bright pink and you were moaning my name and your juices were dripping down your thighs as you squirmed and squirmed and begged me to fuck you until you screamed.

Tywin: I need to go. Remember, no touching yourself until I tell you to, dirty girl.

Sansa: Enjoy the rest of your day ;)

The girls strolled out of the courtyard and down the street towards their favorite café arm in arm, giggling as Margaery coached Sansa until she was sure she would be able to keep up with Tywin later that night.

By eight o'clock, Sansa was dressed in only the green and black lace bra and panty set, around flushed and starting to ache uncomfortably in anticipation. Margaery had helped her artfully curl and drape her hair in a messy array of "sexy bedhead", as Margaery called it, which was really a way of saying they spent two hours curling her hair only to brush the curls out until they were more waves. She'd done her makeup, given her tips on how get the best angles with the camera on her phone, and then left her around seven.

Sansa sighed and wriggled her legs, hoping for some friction. How was she supposed to make it another two hours?! Turning in front of the mirror, Margaery's parting words of wisdom echoed in her mind, and she was struck with a truly naughty idea. Keep him guessing. It's OK to submit now and again, but if you want to keep him hooked, keep it interesting. She'd winked and flounced out the door, laughter bubbling at the now permanent bright red circles blooming on Sansa's cheeks.

Her facial cheeks. She had yet to experience a spanking quite like Tywin described and the thought of blushing cheeks was making her wonder if the smacks would be light, making her flesh bounce, or perhaps harder making it sting?

That was it. She couldn't wait any longer for sure.

Testing out a few angles and playing with the lighting, she finally snapped the perfect shot. She held the phone above her and to the left, dipping her head down so that the shot looked down and caught the side of her cheek just right. The view was from over her shoulder, and you could just see the wavy curls framing her cheek and neck while the tops of her breasts and the hint of black lace cupping them were visible in the frame.

It was incredibly erotic, while stile tasteful, and absolutely perfect. She hit send immediately, not caring that it was two hours early, then typed out a message.

Sansa: Just a little taste to whet your appetite.

Margaery had encouraged any and all references to eating her out, as coy or direct as she pleased.

Not a minute went by before her phone was lighting up with a response.

Tywin: Mmm. I'm envious of the lace.

Sansa: Oh really? Would you stand behind me, wrapping your arms around me, using your hands to hold up my breasts?

Tywin: Yes, and I'd trail kisses over the soft curve of your shoulder, up to your long neck before nipping the shell of your ear.

Sansa: I'd lean back into you, pressing myself into your chest as I arched my back to push my breasts further into your hands.

Tywin: I'd cup them gently, teasingly almost, ghosting my thumbs over the tips of your pert nipples, until you were grinding your ass into my erection as I thrust it against you.

Sansa: I'd moan, tilting my head back against your shoulder hoping you'd kiss and lick my neck, while begging you nicely to touch me more.

Tywin: I'd kiss and lick every inch of skin all over your neck while I used my thumbs and forefingers to rub both of your nipples until you were aching, arcing and panting my name. As you started to whine and grind desperately against me I'd roll your nipples tighter, pinching and sending waves of desire straight to your aching core.

Sansa: I'd gasp your name, then slide my hands up over the smooth skin of my abdomen, sending chills in my wake before trailing my fingertips over the backs of your hands and up your arms.

Tywin: Are you touching yourself, Sansa?

Sansa: No, Tywin, but I'm so wet the lace is giving me delicious friction whenever I shift my thighs. I'm pretending it's you, teasing along the edge with your fingers.

Tywin: Lay down on your bed and send me a picture.

Biting her lip and smiling wide, Sansa lay down and arranged herself so that she was flat on her back, hips turned slightly to the side with her knees bent. She held the camera up so that it looked down her stomach and took in the triangle of lace covering her mound and the pale flesh of her thighs, making her legs look like they went on for days. Thank god Margaery had embarrassingly made her practice these poses, she never would have thought of it herself!

Just as she went to snap the picture, she decided to add her hand, and placed it right below her navel, slipping her middle and ring finger just under the edge of the lace so it was resting between her fingers. She took the shot, used a filter to soften the edges, and then sent it back to Tywin.

Tywin: Good girl. It's my hand instead of yours, and I'm fingering the fold of lace. I'm sitting behind you, and your sprawled between my legs and panting, begging me to slip my fingers down inside to play with your clit.

Sansa: Oh, Tywin. Please let me touch myself.

Tywin: OK, pretty girl. Slip those fingers into your panties and make the shape of a V. I want you to slide the V into the fold, around your clit, up and down, teasing yourself but not quite touching that little pearl of pleasure.

Sansa: It's so wet, and I'm squirming my legs and arching my back desperate for more.

Tywin: Beg me for more Sansa. Pant my name on those pretty red lips.

Sansa: I'm panting, still doing the V and stroking myself, but I wish it were your fingers Tywin. I wish you were behind me instead of my pillows. I want to feel you, feel you all around me, feel you hard for me.

Tywin: Touch your clit Sansa. Circle yourself and scream my name.

Sansa began to circle in earnest, panting louder and louder, writhing her hips and twisting her thighs until she was coming into her panties, her back arched, her nipples pointing as she threw her head back and moaned Tywin's name with abandon.

Several minutes later, she felt steady enough to lift her phone and type out a response.

Sansa: I came all over my panties and fingers, moaning your name and wishing you were here.

Tywin: Maybe one day, Sansa. Now get some rest, beautiful girl. I expect to try out the third outfit tomorrow night.

Sansa: Goodnight, Tywin J

Tywin: Goodnight, Sansa.