Girl meets boy, over and over and over again in “Café Variations,” director Anne Bogart’s highly stylized, sometimes beguiling, and sometimes jarring musical theater piece that is making its world premiere at the Cutler Majestic Theatre. The book is a pastiche of fragments from the plays of Charles L. Mee Jr., Bogart’s longtime collaborator. The subject, of course, is love, with all its trite sweet nothings and ferocious partings.