In the new behind the scenes trailer from HBO, below, "Girls" creator/star Lena Dunham and company tease a few details from the new season of the show, which starts on January 19th. Hannah is "kind of in the best place we've seen her yet," Dunham says. "Of course, because this is 'Girls,' that can't last, but at this moment, she's really happy." Jemima Kirke talks about Jessa's journey, Allison Williams explains that Marnie is "manically grieving," and according to Zosia Mamet, Shoshanna has "made an active decision to be reckless, specially sexually." Check it out: