-Chapter 1-

The team was in Las Vegas for a case, which was promising to be quite a challenging case, and Penelope had joined them in the field, due to the time difference and the sensitivity of the case, Prentiss didn't want them discussing as much over the phone as they might normally.

It was the third night there, when Prentiss told the team to quit for the day about 8pm. They'd worked till midnight the last two nights with not much to show for it, and there wasn't a whole lot left to do. Everyone went out for dinner, and had a good time, and everyone probably drank a little more than they should have, but they were all walking back to their hotel on the strip, so nobody worried too much about it. Penelope wasn't tired and didn't want to go back to her room at 10pm when everyone else was calling it a night. Luke couldn't say no to her, and she talked him into getting another drink at the bar in their hotel. 3-4 drinks later they were making out like teenagers in the elevator on their way up to her hotel room.

The next morning Penelope woke up, with quite a hangover. Her head hurt more than it had in a long time, but that was forgotten when she realized that she was naked, and there was a man in her bed.

Oh my god, that's Luke in my bed!

Penelope started panicking. She didn't know whether to get up and flee or pretend she was still asleep but he must have sensed her panic despite her not moving, as he started stirring, pulling her closer to him.

"Good morning Penelope" he said softly as he kissed her neck

"Um, good morning" she replied, "Um, Luke, did we?" she said looking back at him with confusion clearly on her face.

"You don't remember?" he looked concerned, "I didn't think you were that drunk"

"No, it's coming back to me" she said blushing. More and more memories were coming back to her. They'd had sex at least 3 times that she could remember so far, and it as pretty amazing too if she could believe her memories. That's when she saw it.

"Um, why is there a ring on my finger?" she said holding her hand out, and as she did so, she sucked in a breathe sharply when she saw the matching ring on Luke's hand when he held out his as well.

"I think we got married last night" He said with a completely straight face.

"Oh my god, you're kidding right?"

"Hey, I'm hurt"

"No, I mean I am not saying that the idea of being married to you is so awful, but we didn't drunkenly get married the same night as our first-ever kiss did we?" she said, her voice at the end clearly panicking.

"Yeah, we did. You don't remember? That little white chapel and the fake Elvis down the street? And stopping in the random store to buy a white dress before we went there?"

"Oh, my god" she said as the memories of those events did start coming back.

"You know it was your idea Penelope" he said, kissing her neck and down her back, then her arm, "I just can't say no to you"

"Funny" she said as she turned to face him, "Did we really get married?"

He kissed her passionately on the lips. "Yes, we did"

"Do you remember why?"

He laughed, "Well. Let's see, we had just had sex and you were freaking out about the FBI fraternization rules, but we both agreed it was so amazing that it couldn't not happen again, so you came up with the brilliant plan of getting married because then the fraternization rules didn't apply"

"And you agreed to that?"

"Like Is said, I can't say no to you" he said as he kissed her, caressing her breast with his hand while his other hand moved southward, rubbing her clit with 2 of his fingers, causing her to moan loudly.

"Oh my god, more" she stammered

"Whatever you say, wife" He said, grinning as pushed her more onto her back, moving his mouth to her breasts, and then he entered her with 1 finger while still rubbing her clit with his thumb, eventually adding a second finger as he switched breasts, "yes so good" she moaned, then biting the nipple slightly, "Fuck" she moaned louder, he soon added a third finger, rubbing her clit harder as he bit the other nipple, still just lightly, "LUKE" she screamed as she came, her walls clenching around his fingers as her body shook. He continued to thrust his fingers gently as she came down from her orgasm, he kissed her on the lips again, smiling. He loved that he could bring her to an orgasm that easily.

"Oh wow, Luke that was amazing" she said, smiling as she looked at her ring "You know, I can't believe we did that last night, but I'm not hating it"

He laughed slightly before kissing her again, "same here" he said before pulling down the covers and settling between her legs.

Author's Note: I have no idea what the actual rules are for inter-office dating at the FBI, the show and other fanfic always seems to act like it's frowned upon, for the sake of this story I'm assuming there is some sort of rule discouraging interoffice dating, but it doesn't mention anything about married couples. That may be totally implausible, but for the sake of this story it's true or at least Penelope thinks it's true.

I'm also switching between Penelope's point of view, Luke's POV, and 3rd person. Most of it should be 3rd person or neutral but the chapter should be labeled if its is Penelope or Luke POV, otherwise it's 3rd person.