Mulder's closest friend was FBI partner Dana Scully, who was assigned to "debunk work" by the conspirators and the FBI brass. But against their intentions, her loyalties quickly became affixed to Mulder's quest and Mulder himself, a connection which seemed to pull Mulder's work out of obscurity, as Scully's scientific bent afforded them a certain amount of credibility. Their intense professional and personal relationship continued to strengthen through the years. While the relationship was platonic for the greater part of the series, there are clues that it developed into a romantic one by the last few seasons. Mulder and Scully almost always called each other by their surnames – Mulder purportedly hated his first name, but Scully had no such aversion. At the fourth episode of season seven the romantic undertones were confirmed when the two shared a kiss. In the series finale, the final scene depicted Mulder and Scully after running away together, in bed together, contemplating what the future held. In the season 11 finale Scully revealed to be pregnant with his unborn child.