Unsure...

I really don't know what to do. My brothers gambling problem is getting worse...but I feel like I can't say anything as he'll know I've been checking his bank account. This sounds bad but I haven't hacked into it...he gave me the details a while ago and I hung onto them because I knew he'd end up getting himself in this sort of trouble. He's not gambled all weekend whilst his girlfriend was here but as soon as she's gone home and he's met up with his mate (who's on the dole - says it all) he's back to his old ways.
Seeing as he was already over his overdraft he decided to open the card containing money from his girlfriends parents. Bearing in mind this was supposed to be for Christmas...and guess what it went in the bookies. I didn't mind this as he actually appears to have won £230 so that took him into his arranged overdraft...seeing as he was £200 over his arranged before.
He's just arrived home in what sounded like a paralytic state (I heard him fall down the stairs) but I couldn't be bothered going to talk to him when he's like this. However I decided to have another look at his bank account...and I wasn't surprised to see money going out to William Hill taking him back over his overdraft limit. I wouldn't mind but he owes my parents lots of money from them bailing him out. He hasn't bought any Christmas presents, and he was given money from my grandparents to buy some clothes for his Christmas present and he bought a £10 top and used the rest of it in the bookies. I've had enough.
It doesn't help that my mums a push over when it comes to him as she doesn't like how confrontational he gets. Shame my parents aren't talking because then maybe my dad would know all this and be able to sort it out. It's getting worse and I feel I'm going to have to be the one to say something and just let him get angry. I'm fed up of his selfish ways. The gambling has turned him into an awful person and he's managing to push everyone away with his pathetic behaviour.