The come-hither title of Colt Coeur’s Dodi & Diana is essentially a bait-and-switch. For the most part, the characters in Kareem Fahmy’s two-hander are not the lovers whom one expects. They’re a married couple, Jason and Samira, who are well off and a bit New Age. Samira does kundalini, while Jason sees an astrologer, Vincent, who has told him that he and Samira are “astrological doubles” for Diana Spencer and her Muslim boyfriend, Dodi Fayed. Happily, Fahmy’s tricksy title masks a play that’s interesting and well-performed.