I'm stubborn.... Like dig my heels in, never relenting stubborn if I have to be... And maybe this causes me to be annoying in other ways...but I would say if I had to think hard about it, that would be the clincher for me.
I think though, that in real life, most of my acquaintances don't really get annoyed with me...but I find myself being very picky about who I actually devote my time to. When I am your friend, I am your fierce friend forever...but, for example, I have one lady who has been trying to create a friendship with me for almost 3 years now... But I just don't feel the same way about the relationship, so if she calls on me or needs something, I am there in a heart beat...but if she wants to sit around and talk and drink wine...I usually make up an excuse to be busy...
Now that I type it out, I feel like a bad person