Your wife shouldn't be licking pussy because you want her to. It should be something you both want and it sounds like only you want it. I don't think shes going to get much pleasure out of watching you suck another guys dick either. She probably just suggested the guy thing so you would drop the subject, but she underestimated you.
thats fucking crazy...mmf is cool if you both fuck her, but nothign to do with each other... i have done that a few times, but as far as fucking around with each other, thats fucking crazy and i'm disturb to even think of that....but mff is cool if they are down with it...the thought of you sucking some dudes dick with your wife watching is fucked up 3 ways from sunday...god, i dont knwo what to do,,, i'm gonna puke now...and i thought i was sexually open...guess not
Dude i think you should really read between the lines, her wanting you to do it with another man first to me is her basically saying she isn't into this and if she doesn't have a desire to be with another women on her own and its YOUR desire, you are headed for disaster.