This may sound cliche but i'll juz go ahead 
Have u genuinely felt that sb is out of ur league.
Sb who u feel will nv consider u.
Sb who is out of ur reach.
Sb of a diff class. A higher class.
Sb who has not made ur esteem so rock-bottom in ur life.
Sb who is the most beautiful thing u've seen. Not necessary the
most physically beautiful but nevertheless the most alluring.
Sb who nv fails to captivate.
Sb who mystifies u.
Sb whom u admire.
Sb whom u feel intimidated.
Sb who u envy. Qualities n a lifestyle tt u wish u had.
Sb u long to have n be with but u know it's not possible.
U may have many infatuations or have gotten in many relationships,
but is there one alluring rose out there among the vast bed of
flowers tt makes u perpetually spellbound. But the thorns forces u
to beckon n not dare to attempt to pluck it.