Two water signs read each other without words: intuition, emotional memory, an intimacy few bonds reach. You also catch each other's moods dangerously easily. Your work: don't drown together — someone has to remember to open the window.
Two fixed signs: loyalty that survives anything… and two stubborn heads. In agreement, nothing moves you — together you're immovable. In disagreement, nobody yields. Learning to let go first, even sometimes, is your lesson.