you have not experienced love or if you are in love and read this poem you may think that he is joking or he is telling an unreal story but those who have had failure in their love ,like me,understand what he says.he says that love has no meaning and as soon as you fall in love you should prepare yourself for suffering.he is so pessimistic toward love. Most probably he has had a bad experience and wants to share his experience with the reader.The poet belives that falling in love is just wasting your energy and youth while you can use it in a better way.And i have a suggestion for those who are on the verge of falling in love.Although love is not compatible with rationality but first be rational and sensible then fall in love in this way at least you will suffer less.