Viewer discretion is advised.
This will be a more mature story.
If you don't want to read mature content then feel free to skip this chapter :)

I groan, the morning calls of the alarm clock echoing through the room. My hand reaches over, plopping down on the button that turns off the sirens of hell that wake me from my sleep. Lazily I get out of bed, shuffling my feet across the floor into the bathroom.
With a big yawn followed by a stretch I look into the mirror, gazing at my reflection. I pat down my hair, brushing it out a bit. I brought my hands up to my eyes, rubbing the sleep out of them.
I heard my phone go off in the bedroom, not sure what for I made my way towards the nightstand that my phone sat upon. An alarm was sounding, the title glowing and flashing: IT'S MARK'S BIRTHDAY!
My eyes widen in realization.
Damnit! He was probably downstairs making his own breakfast and coffee on his birthday. Man, I'm such a great girlfriend...
I made my way down stairs quickly, knowing the instant that I smelt waffles that I had done goofed...
Once I saw him standing at the stove, moving around some eggs in the pan I sighed, slouching my posture slightly. I walked over to him slowly.
"I'm sooorrry..."
I placed my cheek on his back, closing my eyes and leaning against him. He chuckled and pulled me to his side, his arm around my shoulder.
"It's fine. I make breakfast for you every morning. Why stop now?"
I huff, stomping my foot slightly.
"Because... it's your birthday. You're supposed to get like... special treatment sort of..."
He shakes his head, one hand rubbing my arm and the other gripping the pan on the stove.
"No, I've got all I need right here..."
Mark smiles, looking over at me slightly.
"Oh, hush."
I playfully bring my hand up and place it on his face, a very... very soft slap. I smile, stepping out of his grip.
Mark pulls the pan off of the stove and slides the egg onto a plate, then placing the pan in the sink. He swiftly turns around, his arm stretched out and close to my head. His hand was balled up into a fist. I close the gap from my forehead and his hand, outstretching my arms to place them near his stomach, my hands also in fists. He pouts, sticking his bottom lip out.
"Ouchies..." his voice a litter high pitched and almost like a child.
I giggle slightly, wrapping my arms around him and pulling myself towards him. I rest my face on his chest.
"I sowwy Mark," my words muffled from being buried into his shirt.
I feel his arms move around my waist. Then quickly he picks me up, tossing me over his shoulder like a bag of potatoes. I squeal slightly, wiggling and trying to get out of his grasp.
"Mark! Put me down!"
He laughs, walking into the living room as if everything was perfectly normal.
"Maaark!"
I laugh, slumply laying over his shoulder.
"Alright, alright."
He gently let's me fall onto the couch, the springs in the cushions bouncing as I land. I begin to sit up but I'm stopped by an impenetrable force.
Mark looks down at me, now sitting on my stomach. He wasn't hurting me, his full weight wasn't on me either but... I'm not very strong.
Playfully my hands slap against his side.
"Maaark."
My tone playful and a smile on my face.
"Oh my gosh, what! You're so needy!"
He grins, looking over at me. His fluffy hair was falling into his face, barely covering up his left eye. I sigh, holding my arms out for him to hug me.
"Why won't you just be a good birthday boy?"
His eyes narrow slightly, his smile turning into a smirk.
"Why would I be a good boy when I could be a bad boy?"
He moves, now hovering over me.
"Mark, I-"
I was cut off, his lips now on mine. Of course I wasn't going to reject him, so I kissed him back. My eyes flutter close, my hands coming up to rub against his chest. We continue to kiss, each one more and more deep than the kiss before.
Slowly he slides his tongue inside my mouth, gliding it over my teeth. He brings one hand up, running his fingers through my hair.
Marks mouth trails off to my neck, placing slow kisses on my skin. His hand that was in my hair moved down to my chest, gently pressing against my breast. A little moan escapes my mouth, his teeth slightly nibbling on my ear lobe.
Gently he pushes himself against me, feeling the bulge in his pants. My hand drifts down his stomach, gently rubbing against him through his pants. He licks his lips, still close to my ear.
"Do you um..." he pauses, gulping,
"want to go to the bed room?"
I nod, bringing my arms up to wrap around his neck. Mark stands up from the couch, my legs tangling around his waist. His arms go around my waist, supporting me as we went up the stairs.
The door swings open and he presses me against the wall, my legs still around his waist. My fingers mess with the bottom of his shirt, pulling it up slightly as if to ask for permission. He begins to pull off his shirt, his hips the only think pinning me to the wall.
Once his shirt is off I toss it, letting it land where ever that may be.
Eagerly I run my hands over his chest, wanting to feel him and be as close to him as possible. His lips go back to my neck, sucking gently just behind my ear. My hands slide down his stomach, my nails gently running over his skin giving him chills.
Gently I pulled down the waist band of his pants, ever so slightly.
He lifts me from the wall, taking me over to the bed and laying me down. His hand drifts to my back, going underneath my shirt and going straight to my bra strap. It unhooks, now just laying loosely on my chest. Mark pulls off my shirt, my bra coming off as well. Instantly his mouth was on my breast, placing kisses all over my body. He moves down my body, now just above the waist band of my pink mustache pajama pants. Slowly he begins to pull down my pants. I lift my hips up slightly to help him out. Once they fall to the floor he does the same to my underwear, letting them stop at my feet. I kick them off into the floor as he starts to unbuckle his pants. I sit up, my fingers fumbling with the zipper before pulling it down and tugging on his pants. He flips us over, me now on top. I finish taking off his pants along with his boxers.
He pulls me up to him, kissing me yet again, this time rougher than the others. I straddle over him, taking his hand in mine and guiding it up my body to my breast. I sit up, positioning myself before lowering down onto him. A low growl rumble in his throat.
I bite my lip, lifting myself up and down onto him.
His hands go down to my hips, supporting my balance, small groans escaping his mouth.
Mark lifts me off of him, gently turning us over so that he's now on top. Sweat was seeping from our skin, beads forming on his forehead.
He slides inside me, thrusting slowly.
I bring my hands up into his hair, tangling my fingers in it. His lips grazed over the skin on my neck, his deep breaths hitting against neck. He gradually got faster with every thrust, breaths becoming more shaky and heavy after every second.
One hand stayed in his hair while the other went to his arm, my hand gripping around his bicep as I felt myself getting closer. My nails dug into his skin, my back arching so I could be closer to him.
"Oh god Mark!.."
I moan out, my fingers grip tighter into his hair. My hand around his arm slides to his back, my nails digging into his skin and dragging up.
He moans, his hands gripping the sheets as we both get closer and closer to our climax.
With shouts that I'm sure our neighbors could hear I cum. Not a few seconds after he does the same, pulling out and letting it spill all over my stomach.
I pull myself up with the little bit of strength I have left to kiss him passionately. His hand runs through my hair gently. Once Mark pulls away he looks into my eyes, a small grin on his face.
"Happy birthday baby..."
I smile, my eyes searching the galaxy in his eyes. He chuckles slightly.
"I love you..."
I nod I'm agreement.
"I love you too."
He begins to crawl off of the bed, looking down at me.
"What do you say we go take a nice, cold shower, and then we'll go eat our breakfast."
I smile and nod as he picks me up, holding me like a baby.
"I have a feeling, this is going to be the best birthday ever..."

I'll more than likely never do this again, it was quite awkward for me and I don't think I write situations like this very well. Plus if too many stories like this are written it will get flagged, and I don't need that.
But, if I get so many requests for this sort of thing I may do one every now and then... but don't expect it to be a common thing...
None the less, thank you so much for reading!