After work there was a trip to the theatre. Avenue Q. Totally excellent.
Then there was some low-fat-low-calorie frozen yoghurt which had an almost instant effect on my companion. No: it didn't make her suddenly lose even more of the weight she's lost, it was a more unpleasant reaction, involving sending her off to the loo. I shall not go any further.
Needless to say, we didn't get the fast train home. The slow train did the job though, and I got to sleep relatively late. So late, in fact, that it was early. This didn't bode well for the following morning's wake up, but it had been a useful day and I'd enjoyed the evening out immensely.