If I were Shining Armor, and my choices for a bride were Cadence, Chrysalis, or my gender-flipped self, I would choose the selfcest, and it's not even my fetish. That is just how hot r63 Shining Armor is.
prince bolero: SHUT UP METAMORPHOSIS!!!*shoots him with magic* *king metamorphosis and prince bolero are slap fighting* prince dusk shine(genderswap princess twilight sparkle): uh why they are fighting? gleaming shield: just a fight for who gets me first