There’s a thin line between lighthearted and disposable. Too often, Sweethearts crosses it. Over a collage of images and items, Sweethearts rapidly lays out its setup. Jamie (Kiernan Shipka) and Ben (Nico Hiraga) are longtime best friends attending their first semester of college at the same school, but they decide to break up with their high school sweethearts to fully explore college life. But while the film leaps off the blocks and rarely slows down, it never nails that “one crazy night” feel. There’s plenty of incidents, but it doesn’t find that jittery, “so painful it’s hysterical” energy. As a result, viewers can often feel like they’re forgetting Sweethearts as it unfolds. Thankfully, Shipka and Hiraga have charisma and chemistry to spare. There’s much the audience can let slide because the two’s energy connects many dots that less talented performers would be stranded between by the script. Best of all, Sweethearts doesn’t require much investment and won’t leave them feeling bogged down or bloated. Sometimes, when the nights are long and the holidays are chaotic, that sort of respite is a delight.