>damn you needed to piss
>you were only an hour into this date with Dash and you'd already gone through two bottles of water
>of course, by date, you meant run
>all of your dates started with a run
>which was fine
>it kept you fit and gave you a chance to stare at Rainbow's backside as she galloped ahead of you
>but something was different this time
>you know the importance of hydration
>you know how much water you were supposed to be drinking for this level of workout
>definitely not two whole bottles in an hour
>but as you'd been running, Dash had been falling back every so often to remind you to stay hydrated before running back ahead
>and then she'd insisted you start working on a second bottle after you'd finished the first
>something wasn't right
>now as you were approaching Ponyville, Rainbow Dash held up ahead until you caught up to her
>"Wow, Anon, that was quite the workout. You're looking pretty tired though. Need more water?"
"No, I do not. In fact, I need to go empty my bladder of all that water you just had me drinking. Is there a public restroom around here?"
>her eyes lit up
>"Oh, you don't need a restroom, Anon. You can just go right here."
>without warning, the cyan pegasus lunges for your waistband and pulls down your running shorts
"What the fuck, Dash?!"
>"We've been dating for over a month, Anon. It kind of hurts my feelings you haven't marked me yet. So do it, babe. Right here, right now."
>she sits down right in front of your crotch, smiles, and closes her eyes
>what is happening
>is this some weird pony sex thing?
>does she want you to cum on her?
>well, you won't say no to that
>you quickly look around to make sure nopony's around
>it's pretty early though, and you're on the outskirts of town
>you grab your dick in your hand, still pretty flaccid, and try to get hard
>after only a few seconds, Rainbow opens an eye and looks at you
>"What are you doing? I asked you to mark me. You won't be able to do that if you're hard. Just give it to me."
"Um, Dashie, I don't know what you want me to do."
>she looks at you like you're a complete idiot
>"Mark me, y'know? Like mark that I'm yours so stallions will know that I'm your mate and no longer available?"
>wait a second
>you've seen enough discovery channel to see where this is going
"You want me... to pee... on you."
>"Well, duh. Why do you think I had you drink all that water? We both know that wasn't a healthy amount just for a run."
>this was just too weird
>over your time in Equestria, you'd slowly stopped seeing the ponies as animals
>but now this
>this is crazy
"Dashie, I'm not going to pee on you."
>her face falls
>and then her brow furrows in anger
>"What? Why not? Why don't you want to mark me?"
>she's standing up now, and her voice is raising to the point you  begin to get nervous it might carry into town
>"I thought you were serious about us, Anon! I thought you were the one! But I guess I was wrong. You don't really love me. This is all just a casual game to you, isn't it?"
>you've been holding your piss in for a while now
>it's become very uncomfortable at this point
>but you can't do this
>"I was so stupid! To think anybody would love me enough to mark me as theirs!"
>oh no
>"Well I won't fall for your game anymore, Anon. Goodbye!"
>Rainbow begins flapping her wings to fly away
>there's no way you're letting this happen
>you love this horse
>sure, this is a little weird, but you won't let that ruin your relationship
"Oh no you don't!"
>you jump up and grab her leg
>she tries to flap harder to escape
>"Let go of me you idiot! You've already made it clear how you feel."
>you'll show her how you feel, alright
>you manage to pull her down to crotch-level, her struggling momentarily ceased as she tries to determine what you're about to do
"I love you, Rainbow Dash."
>you let it flow
>the pale yellow stream of piss jets straight onto her face
>she closes her eyes and mouth just in time, and you can see the earlier smile return
>you can see the liquid running down her face and neck, but you decide you'll need to coat her properly to really mark her
>you tilt her head down, focusing on her mane until she looks like one of those wet-mane memes
>you tilt her further, unleashing the last contents of your bladder along her back
>after you've run out of urine, you wipe the single drop on the tip of your dick on her nose, and she giggles in delight
>you let go of her and step back, looking at your little pony
>if you didn't know what you'd just done, you could almost think maybe she'd just flown through a storm cloud or something
>the entirety of her mane is drenched, and her coat on her face and back are pretty matted with moisture
>tiny rivulets of that same pale yellow roll down off her sides and neck as she opens her eyes and looks at you
>you've never seen such a look of pure love in your life
>before you can even react, Rainbow tackles you to the ground
>eww, some of it got on you
>suddenly, Rainbow begins kissing you, practically ramming her tongue into your mouth
>"Thank you, Anon! I love you too."
>well, at least that crisis was averted
>"Now everypony will know that I'm yours. We should celebrate!"
>the blue pegasus jumps off of you
>"Want to get some celebration treats from Sugarcube Corner?"
>you look at your... mate, you guess is what you're called now?
>she's soaked in your piss
"Sure, I guess, but, uh, maybe you should take a shower first?"
>"What, are you crazy? If I don't let it dry into my coat, how are ponies going to know that I've been claimed?"
>she rolls her eyes and begins hovering ahead of your towards town
>"Come on, I want everypony to see that we're official!"
>well, at least you did it
>you peed on her
>because you love her