Waltzing libidos are the topic of “On va s’aimer” (We’re Going to Love Each Other), a like-it-or-hate-it comedy that shifts from irritating to semi-endearing. A sort of half-baked musical for a quartet of appealing thesps who sing adequately but can’t dance, pic employs the same device as Alain Resnais’ “Same Old Song,” here interweaving eight hit pop songs into the story by putting them into the mouths of the protags. Watchable fluff sports a few nicely handled scenes but so-so saga of thirtysomethings’ reluctance to commit — adapted from a Spanish film — should generate more heat than it does.
Painter Camille (Melanie Doutey) lives with and adores journalist Laurent (Julien Boisselier). But when Laurent meets Elodie (Alexandra Lamy) the new g.f. of his buddy Francois (Gilles Lellouche), illicit sparks fly. Laurent proposes to Camille the same week he’s having torrid sex with Elodie. Francois hires a private detective (Patrick Chesnais) to discover who Elodie has left him for. Close calls and awkward complications ensue. Melanie Page stands out as a perky young woman who overwhelms with her habit of gushing about her seemingly endless enthusiasms. Choreography is tepid.