Whenever you get someone else involved, it's hit or miss, the luck of the draw. Could be great, could be painful, and we're not even mentioning what it takes to get them to take a hint and leave. There's always someone who knows exactly what you like and how you like it at any given moment though, so don't forget to occasionally take matters into your own hands. Just don't get weird about it and tie yourself up first: that poses a few practical problems.