There is no hard and fast rule about age disparity but usually the man should be a little older than the lady he wants to marry. Experience has shown that married women get older much faster than their husbands. Isn't it so? The reason being that after they have had three to four children, they lose their shape and figure and consequently look older. If the difference in age is too wide, it tends to bring a lot of problem into their marriage. Examples are rife in the world around us.