Back story here if you can be arsed 
Basically, my brother (22) is living in Brighton. He moved down there to go to uni' and he left on bad terms with most of his close family because he has basically acted like the biggest twat on earth for the last five years. To cut it short, his girlfriend in Brighton popped up on my FB chat on tuesday asking if I could try and get in touch with DB as she'd finished with him and he had been threatening to kill himself. I told her to let him get on with it as this will be the fifth time in 2 years he has been found out by a girlfriend for cheating on them and got dumped and threatened to kill himself. He has done this to five girls in the last two years 
Now, I thought that I should tell my mum what was going on but decided against ot for a few reasons; a) He is bluffing. He is too self-regarding to ever top himself, b) my mum has had so much stress with him she is in councelling, she worries constantly about him having no money (refuses to get a job, but is constantly out on the lash, I know because I can see his FB) and is constantly sorting his rent out for him etc etc and c) I don't want to feed his cravings for attention. I told his girlfriend as much and told her to ignore him as he just wanted everyone to rally round him.
I know this sounds harsh but I just don't want to know and I don't want to worry my mum. I am sure it is just dramatics. This is what he does when things don't go his way and I think it is sick that rather than deal with his actions, he tries to worm out of it by stooping to this (threatening suicide) I have lost two close people to suicide so I don't take kindly to this nonsense. However, I have a niggling doubt that I was wrong not to tell mum. Can I ask what you think?