CONFFUSED!

So this is what really confusses me! Why do guys always talk to much smack and think there kool! They always think they can get every girl they want when really they cant. Most guys are all talk! Dont they know we have feelings too? Like when they brake up with us we do get hurt, when they cheat on us...all these things make us heart broken! I have always wanted to know that question. Why do guys do such stupid things? Hmm i wonder if i will ever get that question answered?