You're not that special you know, you're not as special as you think you are. Well she gives other guys pet names as easy as 1,2,3. It won't bother her if you did the same to another girl anyway.
It's unrequited, she doesn't love you, didn't love you, never will. When will you come to terms that you guys are just friends and will only be friends..
? Why can't you just treat her normally so things won't get so awkward? Why can't you just let these feelings go..? When these don't even matter to her in the first place.. Wake up..