Falling in Love can be described as an urban American Brief Encounter. Reteamed for the first time since The Deer Hunter, Robert De Niro and Meryl Streep star as a married couple. Thing of it is, they're not married to each other. While Christmas shopping for their respective families, architect Frank Raftis (DeNiro) and graphic artist Molly Gilmore (Streep) "meet cute," their holiday packages becoming mixed up. What starts as a pleasant chance acquaintance blossoms into romance. Inevitably, however, both parties realize that what they're doing is wrong--a shade too late to save their marriages, as it turns out. The film ends with a bittersweet "one year later" coda. The natural charisma of its stars lends distinction to the otherwise so-so Falling in Love.
~ Hal Erickson, All Movie Guide