Silence. The golden rule is silence. Silence, and obediance.

For years, you have trained as a royal guard. Now, thanks to the fortuitous return of Shining Armour, your old-time friend and Captain, you are promoted to guarding Celestia personally. What follows, though, is the discovery of a personal side to the Sun Princess that you could never have imagined, not even in your most vivid dreams.

Let's just say your luck with the mares isn't all that great, two months in Ponyville and you've had your heart stomped on more times than you can count. That coupled with the fact you've lost your job, your house, and have barely enough bits to feed yourself means your life isn't exactly going so great. And after another botched attempt at a relationship you're ready to swear off of the whole dating game for good.
But after a night of drunken debauchery you awaken to find yourself in the service of Ponyville's premiere fashionista, you're willing to forget your previous pledge to the single life after she proves herself to be the kindest and most generous pony you've ever met, but only time will tell if she'll be your future lover or the next in line of a long list of mare's who you'd rather forget.