http://www.ew.com/article/2015/03/20/how-girls-just-went-crazy

"'Girls and Empire don't share a universe, but they exist in the same crazypants multiverse," says Darren Franich. "I don't know when it happened, precisely. This time last year, Girls was showing some telltale signs of mission drift—half the characters didn't have jobs; Patti Lupone gave Hannah dating advice."

This season was schizophrenic. Just all over the map. Hannah off at some school in Iowa for 3 or 4 episodes was crazy (although I think she was technically there for several months.) Adam was a lovable goofball until this season when they made him out to be a total jerk. Where did that come from? It seems to be about just getting people's attention rather than creating fair, coherent storylines for the characters. I would say the time has come for the writers to focus on maturing the characters a bit as they are all too old to be behaving like their 15 years old. It's time "Girls" become women.