Should your boyfriend think you're the most beautiful girl in the world?

So my boyfriend basically said (when I was being insecure) that I am "more attractive than most people".
At first I thought that was a nice thing to say but then I really thought about it and it kind of hurt my feelings. We got into a fight because I feel like (maybe I'm kidding myself) that if a guy really loves a girl, he will see her as the most beautiful girl in the world.
So he basically admitted that yes he thought there were others prettier than me and tried to pull the "well do you think I'm the best looking guy in the world"? Which I kind of think he is so I was even more humiliated.
My best friend is engaged and her fiance has said before that my best friend is the most beautiful girl in the world so I dunno. Or am I just being unreasonable and psychotic? Would other girls be hurt too? Cause I'm more hurt and like wondering "Do I wanna be with a guy who feels this way about me?" I know the whole "there's always someone prettier than you" and I definitely don't think I'm that great- I just thought that if you're really in love with someone, you don't even see anyone else. Maybe I've been watching too many romantic comedies.