Act of Love Sue Ellen is devastated when after having an affair with Cliff, she learns she's pregnant and does not know who the father is. Details Casts Title Act of Love Genres Soap Drama Family Release Date 1978-11-19 Episode Runtime 00 Hours 45 Minutes Season Number 2 Episode Number 10 Production Companies Patrick Duffy Bobby Ewing Barbara Bel Geddes Miss Ellie Jim Davis Jock Ewing Linda Gray Sue Ellen Shepard Ewing Larry Hagman J.R. Ewing Ken Kercheval Cliff Barnes Victoria Principal Pamela Barnes Ewing Charlene Tilton Lucy Ewing Steve Kanaly Ray Krebbs