Earth and fire admire and exasperate each other: fire wants it now, earth wants it right. Used well, fire brings the push and earth makes it real — a formidable team. Otherwise you feel like brake and chaos to each other.
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.