[curiousagain]

In a MFM, the female is the center of attention and the two guys should work together to give her the most pleasure. There is nothing wrong with anybody verbalizing their desires. It doesn't have to be an order, she can say "I want..." or "time to switch". But usually, just body language is enough. You've got lots of good advice here, especially the part about not over analyzing it and just going with the flow and enjoying the moment.