Gamblers avoid friends  after  big win, yes I strongly  agree because  70% of human are  doe's  kind of people, money  in gambling money is really one the thing that ends  relationship  that causes problem between  two friends.   
But  how  every come to think  of it, a gambler  will  always  remember  times of loses, and how he took the risk to predict.

So when he wins he finds it difficult  to share  the money with anyone, so that why I said gambler  avoid  friends  after  big win.