They didn't just fool around all day. Louis sat Harry down with Zayn and went over the real rules of their new official relationship. Zayn and Louis yelled at each other for a good ten minutes, but then Louis whispered something in Zayn's ear and Zayn softened instantly, sitting down and listening to Louis talk.

Rule 1: Absolutely no one can know. Not your mom, not your nan, not your cat. No one.

Rule 2: (Louis mentioned it earlier but reiterated it.) You can not contact me while I'm gone. No texts, no emails, no written letters. I will try to stay in touch if I can on my own accord. When Louis was in town he would give Harry a number to use to get ahold of him, but while he was on a mission Harry basically didn't exist.

Which brought us to, Rule 3: While Louis was on a mission, Zayn was fair game. But while I'm home I'm all yours. Harry's face scrunched up at the unpleasant news, but then considered it for a moment and decided that he'd rather Louis be with Zayn when he was gone than random strangers. It was rather unfair to keep Louis celibate for ten months out of the year. Louis offered the same thing for Harry: You can have whomever you want while I'm gone, as long as you ask permission first (Harry bit back a moan at that), and I approve. Harry nodded.

Rule 4: You will have to upgrade your security at home. (Harry hadn't bothered to tell Louis that his house was already fully equipped with a top notch system, because he'd yet to tell Louis anything about his life really.) Buy a gun, learn to use it. Harry resisted that at first, but then Louis smirk and said he'd be his personal instructor for that particular course, and then Harry didn't resist so much.

Other things weren't so much rules and guidelines for their 'personal time'. Zayn quickly dismissed himself from that conversation and Louis came over to sit next to Harry so they could talk more privately.

"You obviously like when I'm in charge." Harry nodded easily, a dopey smile on his face. "You like when I tell you what to do." Harry nodded again, his eyes starting to get hazy thinking about it. "But to be honest I've never been a Dom before and since we won't have much time to sit down together we need to decide things now."

"Things like what?"

"Have you been like this forever, Harry?"

"Like what?" Harry sounded slightly offended.

Louis smiled softly and kissed his cheek, "I meant have you always been submissive in bed?"

Harry shifted, feeling himself stir a little bit, and looked to Louis' knees next to his. "I've always been a bottom, but I've never taken it to, um, like this level before."

Louis nodded, a pensive look on his face. "Well then we'll just figure this out together, I guess."

"What do we have to figure out?"

"Lots of things. What kinks you have? If we want to use the stoplight system or just a safe word, or both. If you like it more when I'm a gentle or if you're into pain."

Harry wringed his fingers together and closed his eyes. He kept fidgeting for a moment before he breathed out a needy, "Yes, please."

Louis groaned and took Harry's hand in his. "I'm gonna go grab my IPad, I'll be right back." Harry sighed and nodded, still playing with his hands. Louis returned with the device in his hand and sat back next to Harry. "Come here," he cooed and tucked Harry into his side. He unlocked his IPad and brought up Google. "This is just preliminary. I'll do a bunch of research while I'm gone, but I want to lay the ground rules before I go."

Harry nodded even though he wasn't sure what he was agreeing to. Louis typed in a few words into the search bar. Harry's eye darkened a little when he saw them: BDSM sex toys.

Louis chuckled when Harry whined and nuzzled into Louis' shirt. "It's just a search. We're just looking." Louis bumped Harry gently to get him to look up into Louis' eyes. "You can say no to absolutely anything. I'd never make you do anything you don't want to do." Harry smiled and leaned up to place a kiss under Louis' chin.

An hour later, Louis had a long list of yes and no items and activities. They were both rock hard in their pants and Louis was naming things off like an auctioneer.

"Whips?"

"Nuh uh."

"Floggers?"

"What's that?"

"They're kind of like whips but softer and they're less likey to leave marks."

"Does it hurt?"

"Well I've never been flogged, but I'd assume it kind of hurts, yeah."

"Yeah, yes on that one."

Louis just hummed and moved on. "Cuffs."

"We can't leave marks."

"What about padded cuffs?"

"Yes, please."

"Gags." Harry groaned at that. "So yes, then?"

"Yes," Harry whispered.

"Yes what?"

"Yes, please."

Louis pulled gently on the hairs at the nape of his neck, "Good boy."

Harry made a contented sound and curled so he was facing Louis more. "Lou?"

"Yeah, baby?"

"You call me baby and good boy." Louis' grip loosened a little, but Harry clenched Louis' shirt tighter in his hands, "I like it. I promise." Louis visably relaxed, "I was just wondering if there's something I should call you."

"What do you want to call me?"

"I want to call you so many things," Harry giggled.

Louis laughed and said, "Well next time why don't you try some of them out and see what works."

Harry nodded, pleased. "Okay."

"Want to do more?"

"Yes, please."

Louis scrolled a little and then offered, "Rope."

"No marks," Harry reminded.

"They're softer blends of ropes so it won't leave marks. And it's not to tie up your wrists. Its for other parts of your body."

Harry groaned and shifted so he could rub against Louis' leg. "Like?"

"Like your legs, to tie your arms and legs together, your arms to your chest, actually it says we can even use it as a, rather inventive, cock ring. Oh what about cock rings?!" Louis got excited. Harry whines and throws one leg over Louis' lap and started rocking his clothed erection against him.

"Wait," Harry pleaded, "The, um, rope is for what?"

Louis chuckled at Harry's version of a dirty question, "Well, love," Louis reached between them and grasped Harry's bulge in his hand, "looks like I'd use the rope and tie it around you really tight so you couldn't come."

Harry whimpered and rocked harder into Louis' hand. "Please," he begged. He was sweating now and his clothes were uncomfortable.

Louis took his hand away and gave Harry's leg a pat. "Settle down, we have to finish this." Harry groaned, but quieted when Louis gave him a reprimanding glance.

By the end of another hour they'd delved into so many place Louis never saw himself going. The list turned out something like this:

Harry loves the stoplight system.

Safeword: Banana

Dildos: Yes

Vibrators: Yes

Butt Plugs: Hell Yes

Prostate Massager: Ugh, God Yes

Whips: No

Floggers: Yes

Leather Cuffs: Yes

Metal Cuffs: No

Cock Rings: Yes

Vibrating Cock Rings: Please, Louis. Please, Yes

Rope: Maybe, depends on where you use it

Gags: Yes

Blindfolds: Yes

Wax: Maybe, only if it smells like vanilla

Food: Yummy! Yes, please

Paddles: Louis, stop! I swear I'll come.

Nipple Clamps: Oh God Louis!...fuck now I have to change my pants.

Harry ran to his room to change while Louis saved the note on his IPad and exited out of everything else. Louis couldn't believe he was doing this. But if just talking about it made Harry come, he couldn't imagine actually doing it. He was surprised he hadn't soiled his own pants yet. His mind was spinning with possiblities. Stuff they didn't even get to: paint, overnight orgasm denial. But Louis didn't want to overwhelm Harry, considering Louis was half crazy with it already.

"All clean!" Harry announced as he came back and flopped next to Louis.

"Too bad. I was hoping to get dirty before we start packing," Louis teased.

Harry shook his head frantically, "I'm dirty. I'll be dirty!"

Louis laughed and set his IPad down on the couch in favor of dragging Harry to their room.