Kelly answered the phone.
"Hey Rob, Becky can't get to her phone right now, what's up?"
"Where the fuck are you?! I shouldn't have left you two alone together."
"Relax! I think you'll feel a lot differently about that when you see her. I think you know where to find us." Kelly hung up.
She lit up a cigarette. She wasn't entirely sure why she kept smoking. However, she was greatly enjoying this cool, confident, sexy persona she was exuding, and it just kind of fit into that naughtiness she was taking great pleasure in right now. Plus it was easier to get talking to others when they already shared that common interest.
Five minutes passed and Rob entered the clearing, heading straight towards his girlfriend.
"Oh my god, what the fuck happened?! How did you do this?!"
"You like it, right? Look how much curvier she is now, how sexy those giant tits are. You definitely loved it earlier..." Kelly said, seductively. She approached Rob from behind and wrapped her arms around him, pushing her own tits into his back. Her left hand caressed his chest while her right hand made its way into his pants. He didn't try to stop her.
"She's even bigger than me now, and look at the cute little ears and tail, they suit her so much don't they?" Kelly's left hand slid up Rob's t-shirt, feeling muscles she wasn't entirely sure he had earlier. Her right hand had pulled out his cock and was jerking it off, and there was definitely more to jerk than before he drank from her.
"Did you enjoy the effects of my milk earlier? Because Becky definitely did, and I've got plenty more where that came from..."
Rob turned around and kissed her aggressively, one hand pulling her breasts out of the dress, and other pulling her pants to one side and entering her. Kelly was enjoying the roughness of it, Rob was being so strong, and assertive. He kissed and bit at Kelly's neck, and she lifted up one of her tits to his mouth. He forcefully took down a few mouthfuls, then spun Kelly around and entered her from behind, still standing up, one hand round her waist and the other mashing at her tits and squeezing her nipples.
"You like that don't you, you little cow slut. Moo for me. Moo for me to show me how much you love it" Rob roared. Kelly was taken aback at this level of assertiveness, but she couldn't help herself.
"Moo! Moooo! MOOOOOOREE!"
"Keep mooing for me and maybe I'll bless you with my cum."
"MOO please MOO fill moo with MOO cum"
Kelly had already started her own orgasms, or one big orgasm, she couldn't tell anymore. She already knew her horns had grown through, but she wasn't sure what else to expect, because it wasn't going to be finished soon.
"MOOOO PLEASE MOOOOO"
Rob's cock started pumping load after load of cum into Kelly. She mooed throughout, unsure if she was even capable of human speech right now.
Rob wasn't done yet though. He pushed Kelly forwards, off his dick, so that she was on her knees. He followed suit, mounting her and pushing himself inside her again. The new angle was hitting a depth he wasn't before, so Kelly's orgasm immediately picked up in the new position. Suddenly Rob pushed her face into the grass.
"Eat up you cow whore. You couldn't get enough of it earlier and you loved every bite didn't you"
Kelly tried to moo but she already had a mouthful of grass. He was right, she was loving every bite, and she couldn't stop herself from eating more at his demand. Kelly's orgasm hit a high point again and she could feel it all over most of her skin. Short, fine, black and white fur started growing from her all over, ending with another explosion to her ongoing orgasm.
"Look at that, cow slut, now you're even more of a cow. But that's what you want don't you? Moo for me again to show me how much you want it, how much you love it."
Kelly mooed uncontrollably again. Rob had complete control of her right now and she couldn't get enough. His thrusts slowed once more, as he pumped her full of even more cum. She felt it running down her legs this time, so much that she couldn't hold it all in. She actually felt a little ashamed she couldn't hold it in, her new mind berating her for it, 'what kind of terrible cow slut am I? How will I ever breed if I can't keep all this cum inside myself'.
Rob finally finished, have her ass a big slap and pulled out of her. Kelly toppled to the side, exhausted and mooing, cum continuously oozing out from her pussy. Rob laid down next to her, shocked at what just came over him.
Becky sat to the side, unsure how to feel about all this. She just watched her boyfriend fuck another girl to the point of blacking out. They didn't even realise she'd woken up, or that she was sat there masturbating and crying, completely torn about how to react. It turned her on immensely, but seeing her boyfriend doing that, and talking like THAT to another girl broke her heart a little bit. But then she also did that with the same girl, so did she have any right to be pissed off with either of them?