When the boys say they "won't go as big as.." you,
When you look more like a teacher than a student,
When you see the other girls' expressions at you in the school bathroom mirror while they reapply their eyeliner,
When you sweat feverishly around those fragile powder-fresh beauties,
When you accidentally knock their things off their desks because your thighs can't fit and you were nervous to get up and walk in front of them anyways,
When they take selfies with you and your face is a mass of red, your eyes lost in your glasses, and you a blob,
When the boys you care for or even love profess their devotion to girls who are so much more beautiful than you could ever be,
When that baggy t-shirt look doesn't look chic because you have only high-neck boy shirts and are too top heavy;

Don't try to explain that your money goes to groceries so you can't afford team membership dues much less a new blouse.
Don't explain that your nice shoes need a retouch of hotglue so you really only had your snowboots.
Don't tell them that you didn't put on makeup because your mom was in the er, because even though she was, you didn't bother because you knew no amount of makeup could make them see you as an equal.
Don't you dare show them your scars.

Know that they do not laugh at you because you are not significant enough to be the topic of their conversation.
If someone says privately that they want you they will not acknowledge you in public.
If a cute person online shows interest, trust your instincts because those kind of people do not look at your kind of people.
Know that when you meet someone you might like, knowing how others see you, it's your choice if you want to hope that this one will see you any differently.