We knew Castle’s Ryan and Jenny were getting hitched last night, but we what we didn’t know was that Castle’s other couples would be feelin’ the love, too. (Actually, we did. Kind of.)Despite the dead bodies, scorned lovers, and deceptive pick-up artists, this episode was full of heart-warming, swoon-worthy moments for all three of Castle’s main couples. Here are our picks for the Top 5 most romantic moments from Castle Season 4, Episode 11, "Till Death Do Us Part."