That Sarah Ruhl really has love on the brain. The playwright, who The New York Times calls not only “inventive,” but also “young,” takes the Richmond theater scene by storm with a two-play double-play, both on the subject of amore. The Firehouse Theatre and Barksdale have teamed up to each present one of Ruhl's visions, kicking off with the Firehouse's production of “Eurydice” Sept. 18 at 8 p.m. It's a reinvention of the myth of Orpheus, a fella who goes to Hades to track down his late girlfriend, Eurydice, while playing a small acoustic tour along the way. In Ruhl's version, Eurydice gets close to her dad, who's also dead, and is torn when her beau comes to get her. Also, they all dress like it's a Mediterranean cruise in the 1950s. “Eurydice” runs through Oct. 11. The Barksdale puts on Ruhl's romantic comedy “The Clean House” Sept. 26. Not bad for a young playwright. Tickets to the Firehouse are $10-$25. 355-2001.