By Ayeesha Walsh Sabrina Carpenter referenced one of her boyfriend Barry Keoghan’s most memorable movie moments as she took to the stage at Coachella on Friday. The plucky popstar is often heard changing the outro to her song Nonsense and chose to pay homage to the Hollywood star as she took to the stage at the lavish music event. In footage from her set at the festival she sings: “He’s drinkin’ my bath water like it’s red wine, Coachella, see you back here when I headline.” The line of course refers to Barry’s shock moment in the hit movie that made him a talking point in households worldwide…