Charles Xavier

Main Comics (616)
Charles had an unhealthy infatuation with Jean that was briefly referenced in the early comics.
 * 1)  Moira MacTaggert  and Charles had a relationship of old. Years later, they became reaquainted as she dated his X-Men team member Sean Cassidy / Banshee.
 * 2)  Lilandra  - Charles later fell in love with, and had a relationship with, Lilandra, the empress of the alien Shi'Ar empire.

X-Men Films

 * 1)  Moira MacTaggert 
 * 2) Charles teamed up with this government operative in 1962 when he was first forming the X-Men. Upon their first kiss, however, he used his powers to wipe her memory of him. (X-Men: First Class)
 * 3) Decades later, in the new millenium, the two had once again become, in some form, acquainted and confidants, with Moira, now a medical doctor, once again knowing the truth about him. Upon the death of his former body, Charles transferred his consciousness into a prevously brain-dead person who was her patient. When she came in to check on the patient, he called to her telepathically, "Hello, Moira," to which she responded, in shock, "Charles?" (X-Men: The Last Stand)
 * 4) In the new timeline (after the events of X-Men: Days of Future Past) Charles once again crossed paths with Moira, still a government operative, in the 1980s, in the fight against Apocalypse. He later restored her memories of him from their adventure in 1963. (X-Men: Apocalypse).