Girls i need ur advice for a sec. i will also hlp u with boy questions if i can if u give e-mail?

y is it that u dont want to ask out a biy i mean it take me a complete week to even try to walk up and say hi to u (no im not a looser) but its just as hard for a boy to ask a girl out, anyways im in a different wing as a girl i like and i know she knows im there cause we have gym together but the teachers pair us by team we have 8 teams and 2,4,6's do one thing the others do another i nvr get a chance to talk but wen she walks by talking to her friend that i know (not realy but i know him) she'll make this joke i cant help but laugh is this OK? i mean after i laugh she'll keep on going but she looks at me not her friend ( i do this even if my freind is in the middle of a conversation) so i need to know how i could aproch her and wat would be the signs that u like a boy if u didnt really know them i need hlp ive been to the school for 6 month i wish i knew but im only in 8th grade and this is so uncharted its not even funy but can u leave ur e-mail if u want i mean just incase need hlp