Ted, the fact you have to ask on here means you are not comfortable with it - or (bad thought for a lovely Saturday morning) you are getting off on thinking about it. I think you should tell them no. By the way, have you talked to Julie about all this? - I just get a feeling that all the "how great all this is" is only coming from Matt's side, do you really believe him? I know a pal who went along with fetishy stuff because her bloke got turned on by it, but she was so unhappy about it all and it really wrecked their marriage in the end. How can someone's marriage be made "stronger" by having a strange female tart in your bed when you are in it as well? Be excited by the prospect by all means, but don't join in - you could ruin a long friendship.