If you do go to C make sure it is the type of C that you feel comfortable with and someone that is pro M.
Do you think she suggested C as she thought you would be resistant and would refuse? Have you asked her how she would feel if you did all these things with another woman - would she feel it was so innocent then?
Try googling Marriage Boot Camp and have a look at their site - it might prove interesting.
saffie
Saffie me 46 H 46 M in 1986 D20,D18,S16,D13 H's A 01/05 to 07/06 H recommitted to M 07/06 renewed vows 09/06 Going from strength to strength