Squid and the Whale, The 2006

Bernard Berkman, the patriarch of an eccentric Brooklyn family, claims to have been a famous novelist but is now reduced to teaching. His wife Joan discovers a literary talent of her own, and it breaks up the family, leaving the two teenage sons, Walt, 16, and Frank, 12, divided between their parents. The wife starts an affair with her younger son's tennis coach, while the husband starts sleeping with a student whom his elder son is courting.