Guys read this!! andgirls too can please help me! im 18 n im single!! all my friends are committed?

ive never been in a relationship before and just waiting for the right person... all my frieds are getting committed one by one and sometimes when i see them i feel sad... people say im pretty and beautiful.. and some think that i hae a boyfriend and are shockd when isay that im not committed... i feel im prettier than my gang of friends... im not saying this in a u know " i have pride way" like"m the best" its nothing like that...its just that compared to the group of my friends im os much prettier than them ad they themselves say that to me sometimes too.... i feel shy when i come across some guys who are of my kind...i feel so shy and over possessive about my self that i miss to make a mark on thir eye... i bend down my head when i feel shy and is this a big turn of to u guys?? or is it like"oh not my kinda girl or oh what she upto or ???" whta do feel ofthese kinda girls