Although Fluttershy had mentioned the possibility that their relationship might not last forever, the fact of the matter was that it did last a very very long time with almost no hurdles. Eventually Fluttershy did muster up the courage to do more and more sexual things with Jack in her own time, she'd even gone as far as buying a costume and trying out a little role play. Of course, bestiality was still a big part of Fluttershy's sex life, she had made it very clear that she didn't want to give that up and Jack had agreed on the condition that he be allowed to have sex with other Ponyville residents now that Lana had been carted off back to Afriquestria.

One big hurdle that did come up many years down the line was the idea of marriage, Twilight Sparkle had said that interspecies relationships were fine but that marriage was a bit more ambiguous and kind of a gray area when it came to the law, so it was very touch and go for a while. Needless to say, the relationship persisted despite both of them engaging in some casual sex with others when they weren't having fun witch each other, one thing that annoyed them was that ponies were constantly asking if they were gonna adopt some kids, to which both of them said a very definite "No". Fluttershy wasn't maternal in any sense and didn't consider herself the mothering type, while Jack just thought it would be awkward for foals to have a human dad, especially since he was the only human in existence, the bullying didn't bear thinking about.

In any case, Jack and Fluttershy were happy.

The End

Author's Note

Thank You UndeadMan for this story idea! I hope you enjoyed it :)