Steve
Because as horrible as it sounds, I'm not attracted to you or Bucky. The respect I have for you both is at a level that wont let my mind go there, even for a second. And...
Because of what I am, there are parts of he that changed, theoretically it's because I had to spend a month as a Cat... And the way my luck runs in this place I'd end up getting pregnant with a liter of ten. Or crushing Clint's pelvis... Or worse. Or make it so he's tired of me...