undeserving uni girlfriend

My boyfriend is very academically smart, gets straight A's, awards, etc. you know, the total genius guy...without even studying much. And then there is me, I barely pass my classes, it's not like I don't try either. I have always been this way though...I never got straight A's and I'm a C+ student. I don't even know how my future career plans are going to turn out :S and because of that I feel like I am not good enough for him. This guy knows what he wants to do in life, and I'm barely passing classes and totally puzzled with my life. I know that it isn't good to think like that but I just can't help it...