Didn't the last series end with the woman just saying something like "You deserve each other" or some other incredibly lazy punchline? Graham Linehan seems to have a track record for this, he seems have great difficulty in contructing a plot with a worthwhile ending in mind. I remember the ending of the last episode in the last series however because it was just so abrupt and out of place, as if he'd got to the end of the jokes and thought, "Oh, that'll do". A few of the Father Ted episodes were like this, but were often saved by the charming performances of Ted and Dougal.