Aliens and Cupcakes

Things you learn while living on an alien planet: Aliens love sugar, so opening your own cupcake shop is a very good idea. Having a benefactor to introduce you to rich aliens eager to purchase absurd amounts of cupcakes is an even better idea. I wouldn't recommend killing said benefactor's nephew with a butter knife, though. But how should I have known that stainless steel from Earth is toxic to him? And no matter what you do, don't accept help from the alien that lingered in the shadows and watched the whole thing go down. Seriously, don't. Dark-ish sci-fi romance.
Contains the right alien to put the frosting on your cupcake. No cheating. HEA.