It's still unclear to me how and why the break up occured. I know WW and Gretchen were seeing each other at one point. I think she broke up with him and started dating Elliot. And I think after WW sold his share of the company to them, they used most of his ideas to build the company up. if that was the case WW should be angry only at himself. If you agree to an amount for a buyout that's on you.
Funniest line in the last episode came from Marie IMO:
"your neighbor, Carol call the police and said she saw Walt. She swore he looked like the Unabomber....." LOL LOL
Ok, about to start season 5, and I am sad.
Sad because I don't want it to end. This is probably the best show I have ever watched.
As much of a bad guy Gus was, I was still kinda upset he died.