so far we have only had the mfm and it was good,( i liked to watch him enter her as she sucked me) we did not do a DP and maybe sum day we will, My wife was up for it so i dont know for sure how you should approach it. but you might try chattin to a dude and have her with you, maybe do a lil cam, the problem will be to find a single male that you know is not married and respectful, as most ( not all by a long shot) seem not to care what the 2 of you think but there are some very nice guys out there you just have to take the time to look or you can always attend a "party" and work it out
Good luck and good hunting