"This Means War" is a date-night movie that's really just an excuse to play around with gender crossover demographics. The romantic comedy of the story is hijacked by the buddy movie at its core.
Sparks fly thanks to the on-screen chemistry of the bromantic leads, undercover spies and best friends FDR (Chris Pine, "Star Trek") and Tuck (Tom Hardy, "Inception"), who turn to high-tech surveillance to track each other's moves after both fall in love with Lauren (Reese Witherspoon).
Pine struts as a generic cocky playboy (who lives in a bachelor pad with a swimming pool on the roof), while Hardy's Tuck is a sensitive soul with an alluring British accent, a young son and a beautiful ex-wife. Both actors effectively mine the humor of their boys-will-be-boys competitiveness.