This is because he likes you undoubtedly and feels that they're responsible a person as protector and escort for regardless of the need be from your side.
These things were identified as as "poessy rings" or "love poem rings" which in fact had few saying or lines of poems engraved upon them. https://h63rtkfwlznoxecwo7dxsezhtpyifcr564Z6vgym66wljc3ouooa.cdn.ampproject.org/c/s/Seocheonilbo.kr%2Fbbs%2Fboard.php%3Fbo_table%3Dfree%26wr_id%3D184635