Falling in love is a dangerous thing. That rush of endorphins (and other tasty chemicals) the body produces in the midst of requited love and/or lust has been known to lead to some very bad decisions, especially in cultures which still consider monogamy and marriage to be viable concepts. Getting married while in the flush of the new relationship energy – and, worse, believing the feeling will last – is the mistake made by Nat (Rose Byrne) and Josh (Rafe Spall) in Dan Mazer's I Give It a Year, a British comedy that is both hilariously profane and unapologetically skeptical about the institution of marriage. Having no business being married to each other, Nat and Josh quickly head for a Before Midnight-style meltdown, as Nat flirts hard with her American business client Guy (Simon Baker), and Josh's also-American ex-girlfriend Chloe (Anna Faris) returns from a stint do-gooding abroad. The screenplay is sharp and fast-moving, never missing an opportunity for a sight gag or dirty joke – a classy dirty joke, of course, being English and all – but it's Anna Faris who steals I Give It a Year, in an all-too-rare role that downplays her sexuality while emphasizing her charisma and comic timing. It's enough to make you fall in love with her.