Twilight finds her mind drifting off more and more into thoughts regarding the newly-met amateur astronomer, Comet Tail. She realizes these are thoughts of not only infatuation, but thoughts that tell her she saw him before. But where?
Eventually, she finds out...and she's not happy with who she remembers him as. Can he prove his sincerity? Maybe Twilight's B.B.B.F.F. can clear things up? Or will Twilight let this comet pass without so much as a glance on her part?
Written in response to (what I felt was) a severe lack of TwilightxCometTail works, as well as one comic that posits a theory on how Shining Armor got his cutie mark: http://fc00.deviantart.net/fs71/f/2012/128/b/3/summer_skies_by_fongsaunder-d4yy4mt.jpg
Please enjoy and critique!
EDIT: Featured as of June 23rd, if only for a few hours! Whoever made that possible, thank you SO much!

A group of humans attempt to escape a global nuclear war through the use of time travel. However, something goes wrong with Sam Mitchell's pod, flinging him far into the future, into a time where humans no longer exist and a race of sentient ponies now thrive as the dominant life form. He eventually comes to the attention of a certain purple unicorn, who aims to learn all she can of Sam and his civilization as well as help him adjust to his new life.

Can Sam handle living as the only human? Can Equestria, and Twilight in particular, handle the changes this alien brings?