What do you think happened to Julia Toni and Walter ?

Why did he start gambling? Because of greed? Because he was doing all good.

And i cant understand how Walter can be so jealous person. In the beginnings, he implied his wife to see Brandon naked but then he got paranoid.

And in the end, what do you think happened to Julia Toni and WalteR? By winning of New York, i guess WAlter earned a lot of money but those money already was for mortgage. And they did not break up with his wife, she loves him very much. I guess those

And why did he fire Jerry? How can he so unfaithful, disgusting person?