Unfortunately
they do.
If my best friend is really sad, I will most likely end up sad too. If a close friend is stressed, I could very well get stressed as well. I think it's because I'm an empathetic person, I can't help but feel how the other person is feeling, much as I try to keep my own happiness. That's not to say that I'm never immune to others emotions. Heck, I can ignore someone's dumb attitude if I want and go on with my own happy life. But if they're close to me, if they mean a lot to me... it will affect my mood. Almost guaranteed. It sucks. It can be helpful at times. For the most part though, it sucks.
