i cry everytime i see my crushes face..

is it just me or i cry everytime i see his face when no one is looking because it just hurts to think about one day i will graduate and one day it might be the last day i'll ever see him and he'll just be a memory in my brain just engraved forever cause i've dealt with grief before and it was okay because he died and it just means nobody will ever get to see him (im talking abt someone else that died) but him? (back to talking abt my crush) people will still see him and someone will marry him and maybe i'll see a child with his eyes and it won't be our child.