You think she's being selfish? 18+ please GIRLS ONLY PLEASE!!?

ok so my girlfreind and i are talking and i mentioned that it wasn't fair that i eat her out but she doesn't giive me BJs so im just wondring girls am i being the one that unreasonble or do you think she should pay it back? is there somthing i'm missing here?..... p.s. it's not like i want to eat her out but she asks me to do it... so with that in mind am i still being unreasonable?.......................p.p.… this isn't a real problem in our relationship but its a annoyance -_-''