KBgrl, I so know what you are going through!!! I'm actually really glad that you posted this b/c I have been wondering the same thing over the last month with my bf.
I have been noticing little things with him that made me question if there is something that I've been doing to annoy him. We have an awesome relationship, we're best friends and are very open with one another. But I was feeling rather 'empty' or alienated

...some days worse than others. I actually doubted myself a few times wondering if he was 'bored' with us, when in my heart I know this is not true, but it's just a feeling that's made me feel a little insecure. He's not been aggressive towards me at all, that's not his style at all just sometimes a little distant I guess. He has an incredible personalily, very very funny and always goofing around and when he's in his 'roid mood' it's all so new to me!! I know when to back off, and I've done so when appropriate but I've felt so awlful about it for some reason, taking it personally.
I realize now that his roid moods has nothing to do with me, I am after all a perfect gf

<lol>, and I think he appreciates that I don't get upset when he is in a 'mood'. I just leave him alone, give him the space until he's ready to be 'normal' again. It's just something we as humans have to learn to deal with and control. Control being the operative word.