1980s Schoolgirl Shoes I Read A Book About An Elfking Who Takes A Schoolgirl As His Bride Into A Hill. Do You Know The Title?

I read a book about an elfking who takes a schoolgirl as his bride into a hill. Do you know the title? - 1980s schoolgirl shoes

He had left a former friend of freedom and compassion for the loss of several years of his life. The image of the elf seemed bookcover Sting. Written in the 1980s.