why are guys such wimps?

man, this dude in class is so cute, i know he likes me but yet he doesnt talk to me. he only keeps staring at me and checking me out. but as soon as he comes close to me, he gets all nervous, i dont understand it.

there's this other guy, he is gross, a nerd, but he he got the courage to ask me out. i mean, he is a jerk and all, but i have to admire him for that.

why are guys such sissies?

is this happening to anyone else or just me?