Courtship in bunnies is quite brief. The female generally secretes an airborne hormone scent, referred to as a pheromone. Once the male detects this scent, courtship behavior may begin. The male and female sniff each other, possibly to make sure of each other's sex and mating receptivity. One bunny then dashes off with the other in hot pursuit. Once they stop playing hard to get, the bunnies stomp their feet and may do a little "dance" by kicking their feet in the air as they run.
To learn more, read Courtship in Small Mammals