I am reminded, strangely, of an adult comic I browsed long ago on the Internet. I forget it's name but I remember that the cliffhanger/hook of the first issue was the reveal that the main character (War Princess comes to mind, though I'm not sure - a Wonder Woman analog) and the main villain (whom she soundly defeats in a prior fight that issue) were, in fact, lovers (knowingly so). They were still completely opposed to each other (she honestly foiled the villain's plan and he was honestly trying to make it suceed) but the relationship was a mutually consenting one, if requiring discretion, and not some sort of dominant/submissive one, blackmail, or what have you. As I only remember that one issue, I don't know if it was going to be something like Romeo and Juliet or something a little more complicated than that.