It is a unique experience that two people lead together through the daily life of the couple Josh Cornelia. Josh is now a famous writer, but things are turned upside down, as Josh meets Cornelia's girl. Their relationship begins with psychological realities while there is a different experience than usual.
Baumbach, whose films include the searingly funny, autobiographical The Squid and the Whale and the brilliantly uncomfortable Margot at the Wedding, writes wry, sharp, poignant stuff.
Generation Y pays tribute to some kind of romanticized, analog echt-ness while being profoundly, scarily (often hypocritically) in virtuoso command of all things digital.
Few movies are as perfect in showing the duality of ageing generations simultaneously distrusting the young whilst wishing they were young again - and even fewer are as funny and insightful as this.
While We're Young starts off as an empathetic, funny look at middle age and winds up as profound and schematic as a Neil Simon play - or, for the younger set, an episode of The New Girl.
Ultimately, this film is about two well-meaning people coming to grips with who they actually are versus who they've always thought they were supposed to be. And when it's on a roll, While We're Young is hilarious.
As with much of Baumbach's best work (as with one of his great cinematic predecessors, Woody Allen), you can sense him working out some personal demons and conundrums within the narrative of his film.
The wonderful thing about While We're Young and the relationship that develops between Josh and Cornelia and Jamie and Darby is that it's less about resentment than it is a celebration of romantic love. At least initially.