Maybe not 'the most treasured,' because your first love often isn't your biggest, most passionate love. But you do always remember your first, and I don't think you ever really fall out of love with the person.
Like i will never forget Jacob, like ever ever ever!
I surely dont love him anymore, but no-matter status or feelings you have with that person after love , you will always a bond with them and memories that make you wish you could redo.