Based on the provided contexts, Jotaro did not marry Kakyoin in the official JoJo's Bizarre Adventure series. However, in a doujinshi (a self-published work) by CLAMP called JoJo's Bizarre Married Life, included in the fanzine CLAMP LABORATORY 6 and a continuation in CLAMP IN WONDERLAND 1994 SUMMER, an alternate universe is depicted where Jotaro and Kakyoin are married [1] [3]. This is a fan-made interpretation and not part of the official JoJo's Bizarre Adventure canon.