Yes! There's just always something going on there. I remember a girl I was sort of friends with throughout gradeschool, starting from when we were about 3, and she could sometimes be very bullying. Once for about a week in 1st grade she totally tormented me, but then other times she would be oddly vulnerable and I suspect she had some problems here and there. I didn't trust her, and I eventually didn't want to be friends with her because you never knew when she was going to be bullying or get a really bad idea (flashes back to her starting a rather large fire in my garage...) but knowing her for so long I knew there was something weird there.

I guess it's just a basic idea that if you're feeling okay you don't usually need to make somebody else feel badly. It might sound overly sweet but it's often just true!