Sheldon and Penny have kept their meeting a secret from everyone, because really, its no one's business but their own.
And honestly, who wants to hear anyone's negative thoughts?
So Penny and Sheldon meet every Saturday for laundry and discuss their next meeting that Saturday. Penny likes to call them encounters, or sometimes crudely, a booty call. Sheldon does not see it this way, sure they engage in coitus from time to time, but their 2 A.M meeting on Saturday don't always consist of sex. They are just content with each others company.
Some Saturdays Penny would need him to just comfort her with some cuddles and talking. Some Saturdays Sheldon would vent about his colleagues or his roommate. Some Saturdays they said nothing, because there was no need for words when they could be showing each other how they felt. Some Saturdays, they said nothing, but this wasn't because they could show it, its because they were content listening to each others even breathing and their heartbeats that fell into sync.
This Saturday, at 2 A.M was a mixture of many things, and Penny was on edge for some reason though she didn't know why. She could tell Sheldon felt the same. So she had kissed him, and he kissed her back frantically.
His notebooks and her book long forgotten as their hands roamed each others bodies and their mouths explored each other. A low moan escaped Penny's lips, and Sheldon mumbled into her skin.
"I love you." They both pulled away and looked at each other. They sat in silence for a moment, knowing this was the moment they had both anticipated.
Sheldon didn't have to say it and neither did she because they both knew.
But as they sat there in this moment with their eyes locked on each other, her heart swelling with love she never knew she could experience, she knew they had to say it at one point, because keeping all that love inside...well someone was bound to explode. So after a minute, which felt like an eternity to them, she smiled softly.
"I love you too. I think I always have."
He smiled at the blonde, and responded, "I think I have too."
So every Saturday from then on, between the touching, and bickering, and movie wars, they discussed how to present their relationship to the boys. Every 2 A.M they said they loved one another. Every 2 A.M they were a step closer to being more than just a 2 A.M. They were closer to being an all the time thing. Every 2 A.M for six months, they had slowly moved closer to this. They had slowly moved closer to being a relationship.
They pretended to not notice when it first happened, but they both knew, and now their 2 A.M meetings happen more often. Not just Saturdays. They happen on Sundays, sometimes Thursdays. Sometimes Penny says screw 2 A.M and sneaks into Sheldon's room after Leonard falls asleep.
But on this certain 2 A.M, on their seventh month (exactly, Sheldon would remind her) they got careless, because well who cares if anyone sees them making out in Sheldon's spot? They're basically an item anyways.
Leonard woke up, and came into the kitchen to get some water. Penny and Sheldon too wrapped up in each other to notice, so when the short physicists turned around and saw them, he squeaked and dropped his glass.
Penny and Sheldon were startled and looked towards the source of the noise. Leonard's mouth moved but nothing came out.
Penny and Sheldon laughed, and then finally Leonard shook himself out of his state. "I'm just going to say I'm dreaming and walk away." But Leonard knew this wasn't true, because no matter how discreet Sheldon and Penny thought they were, everyone noticed.
The way they just acted around each other. (Oh, and the camera's Howard installed in the hallway gave away a lot.)