The Shakespeare Theatre Company has prepared a valentine for Washington, its premiere of William Shakespeare’s romantic “Cymbeline.” Director Rebecca Bayla Taichman (“Twelfth Night”) returns for this magical story of forbidden love, mistaken identities and a magic potion. The cast is headed by Gretchen Hall as Imogen, the daughter of King Cymbeline, and Mark Bedard as her husband, Posthumus, the orphan raised by the king. Both Hall and Bedard have numerous Shakespeare credits, Bedard as a frequent performer with the Oregon Shakespeare Festival during the past four years and Hall with training at the British American Drama Academy in London and Oxford and with the Continuum Company of New York University Graduate School in Florence, Italy.