I agree with the drink, go out have fun, don't get a DUI (safety brief of course!), and don't get drunk or come home too late.
As for the article it's no biggie if it all didnt click with you, my point in bringing it up though is that you have been nothing but nice, so she has a green light to treat you like crap because she knows you'll just keep being nice.
If your W apologized when she usually doesn't, that is huge in my opinion. Like it was said before you not sleeping in the same bed may have pushed the message across. Now don't run for the couch every time you guys fight, since things done repeatedly lose their effectiveness. I'd recommend coming up with a small list of ways of showing increasing detachment, and change them up whenever she blows up.
How does the saying go... You don't value something until its gone...
