A Favor for a Favor (Postal Dude x Reader)

Postal Dude Commits Infidelity

At your house, you introduce him to the rooms as you make your way to the bedroom.
"This here is the kitchen, you'll only find beer and soups here. That's the bathroom right there, for all your shitting needs. That over there is the-"
"Shut up and let's just get on with this" he spits in responds to your tour guiding.
You open the door to your bedroom, "I thought we'd at least say something to eachother before I let you churn my innards" you respond while taking a seat on the bed.
"We're not talking, we're exchanging favors. Now are we doing this or not, I have shit to do" he says, slowly walking in front of you.
He's looking down at you, his alien t-shirt taking up most of your view. Getting to the point, you undo his belt and unzip him. It's still flaccid when you take it out through the hole in his boxers.
"Wake it up" the dude whispers, petting your head to signal exactly what he's asking for.
You start with a slow lick up the shaft, it reeks of ball sweat and piss. However, it doesn't stop you from taking his limp dick in your mouth and feeling it grow until it pokes the back of your throat. Once it's fully erect, you start properly sucking him off. Both of your hands on his hips, his hands holding you by your hair. You keep your tongue against his piece as it goes in and out your mouth. Your lips stay tightly wrapped around him.
He pulls you off of him by your hair, causing you to lay back on the bed. You watch him take his pants off, and you follow his lead. He got on top of you before you could take your bra off.
He takes your legs and rests them on his shoulders, making his position of choice the mating press. With a little bit more guiding, his dick enters you. You can't help but sigh with him as his size fills you up completely. He makes no time for you to breathe and immediately starts thrusting at his own pace. It's already so much so fast, and you can't control the noises coming out of your mouth as his cock rams your cervix. You hear him chuckle a little, and to shut him up you pull him in for a kiss. This turns his laughing into moaning.
It starts feeling better and more better, and he's only fucking you faster and faster. You can feel him getting closer and closer by the second. He puts his hands behind your head, making you see below you. Watching his dick slam in and out of you only excites you more.
"Oh fuck, that's the ticket" he utters out before his movement becomes out of rhythm, and he fills you with his seed. You can feel his dick pulsating as it spills cum deep in your insides. The dude breathing heavily on top of you, doesn't get out of you for a few seconds.
Then after that, he puts his dick away, not even cleaning it, and puts the rest of his clothes on. You grab tissues and wipe away the leaking mess the dude left in you. After getting dressed yourself, you get out of bed.
"Okay, now I'll sign your petition."