What doesthe young man mean by “great honey-coloured/Ramparts at yourear?” Why does he say that young men are “thrown intodespair” by them?

The “greathoney-coloured/Ramparts at your ear” refers to the beautifulyellow coloured hair that falls at the woman’s ear and cover itlike a wall around a fort. He says that the young men are “throwninto despair” by them because they look so beautiful on thewoman that her beauty gets thoroughly enhanced. The young men fall inlove with her and feel despair. He says that it is not possible thatsomeone would love her alone and not her yellow hair.