Reality television is lampooned a lot  — and loved a little bit, too — in a new musical now running at Second Stage Theatre. Written by the playwright Itamar Moses and the composer and lyricist Gaby Alter, Nobody Loves You follows a philosophy student’s televised pursuit of his girlfriend on a reality show that looks a lot like "The Bachelor." Other contestants, a telegenically smarmy host, and even a Twitter-addicted fan, all make appearances.