See, that's a good point if both split threads are plot-relevant.  If the GM works the main plot so that nothing relevant to it happens in the second thread though, that's a different story, and as long as the characters don't do anything too out of the ordinary themselves, it should be easy enough to plan out a brief outline of what should happen and then allude to anything important in the main thread.<br/><br/>And I get your point about splitting attention between multiple threads, but on the other hand, you get the story to actually progress instead of getting bogged down in an endless sex scene...