Until American Ballet Theatre’s premiere of Christopher Wheeldon’s “Like Water for Chocolate,” my first thought upon leaving a ballet gala had never before been: “well that was hot.” ABT has found its new Valentine’s Day programming. Debbie Downers “Romeo and Juliet” and “Swan Lake” can take a rest. Spoiler alert: the star-crossed lovers in “Like Water for Chocolate” also perish together in the last scene, but the effect is, well, different. After decades of longing, Tita and Pedro are finally free to consummate their desire, and their love is so profound that at the point of climax they erupt in flames—their bed beautifully engulfed in fiery projections by Luke Halls. Though their earthly bodies are lost to the conflagration, their souls ascend to an astral plane, united for all eternity. Principal dancers Cassandra Trenary and Herman Cornejo, nearly nude, floated up into the clouds in a Kama Sutra-like tangle as the curtain fell. Ahem.