Hey kit, I can understand what your going through- however the sides are reversed- I have bipolar 2, and my family went through hell with me. There wwere times when I was sooo full of energy, and times where I just crashed, and literally could not pull myself up to go anywhere, or see anyone- not that I didn't want to , I was literally exhausted/ had extreme anxiety/ depression- and likepurple said, i'm sure he doesn't dislike any one of you, he most likely loves you all very much, and may feel like an oddball becasue of this disorder, and all the emotions that come along with having this. At times I love being bipolar becasue I can get sooo many things done in sooo little time, and then once you have burnt yourself out from all the energy you inevitably crash..And the mor the cycle continues the worst and worst you crash...If he has threatened to kill himself, yes I wouldn't take it lightly at all, he very well could...And if he has threatened to hurt/ harm family members he might actually do that as well..Not that he actually wants to, but it is always a possibility as with anyone who threatens these types of things. All you can do is let him know you love him and are here for him, and want to know what is goind on with him and his life, is he on meds? Is he seeing a counselor? These are questions you should ask him...You should find out the warning signs of mania/ depression in bipolars...This could help you better understand what he is going through. When i'm depressed, I refuse phone calls, I have quit jobs, I taken of from college, becasue it can be that debilitating, but with the persistence of my family, and friends I did get back on the right track and get on medicince and got my life on track...So be persistant, and just be there for him thats all you can do. There is a sight that you can visit it is bipolar.About.Com- it is really good and gives adviec to people who suffer from bipolar/ the family members who put up with our a$$es...Good luck!!!