Some plots of first series episodes revolve around both of them pursuing romances with men and the jealousy the other partner experiences; by the second series, all mentions of a lesbian relationship are completely dropped, including a recurring gag during the opening credits that showed them in bed together.
In several episodes of the first series, both characters engage in romantic relationships with men while the other partner experiences jealousy. By the second series, any mention of a lesbian relationship is entirely absent, even the ongoing gag in the opening credits showing them in bed together.