brilliant portrayal of depression
I'd heard from several people that this show had a shockingly good portrayal of clinical depression, but I was skeptical. Wow. They were right. If you watch the show from the beginning, the signs of her being depressed are there from the very first episode: her apartment is a mess, she hasn't spoken to her friends in three years, she has an entirely fictional relationship with her parents, etc. The efforts she made in season two to conceal that depression (and keep her relationship going) were great. The dramatic impact when it finally hit full force, and the helplessness of everyone around her, was also well done.
The only thing I didn't like was the discussions towards the end, that implied that all she would have to do is see someone and start medication and everything will be fine. Hopefully they won't "end" this storyline as simply as that, or at all.
It's a lot more interesting as a love story between two very damaged people than another love/hate romance. Overall, very well done and acted.