Why wont any boys start anything with me?

im 5'3 ( i think) i like 130, but i have muscular legs so that why im that weight. i have dirty blonde hair, bright green eyes, i dont dress up but i dont dress like a scumbag. my friends tell me im very pretty and gorgous all the time, i had a relationship with a guy on and off for about 2 years. is it because of that? all my friends are pretty 2 and skinny, im a size 7/8 jean so im like the biggest of the group ( that gets to me sometimes). i wear mascara and a little coverup with my face is broken out. i just dont get it!! all my friends talk to guys or have a thing or are dating. btw im gonna be a sophomore. im just so confused.. boys used to ask me out all the time in our grade but not anymore. i get good grades, i dont show off, i can be funny, im only mean when im insulted and i joke alot. pleaseee helppp. is there anything i can change that may help me?