MMF Threesome Question

Does anyone have any thoughts or experience with a male-male-female threesome? I am a married guy who is open to an interested in trying a mmf threesome. I think this would also be less threatening to the relationship vs a FFM threesome. There would be limits on what would happen of course. My wife is turned on by the thought of me doing certain things with another guy - and I am cool with this. I also think I am ok with her doing certain things with another guy in this situation.

Any thoughts if this is a good or bad idea? Any similar experiences?

personally this is nothing that i could ever do me and my boyfriend have been engaged for over a year,and this is something that we both feel exactly the same about and i feel that this is on the same lines as cheating and sex is for couples and couples only and the fact that my partner would be pleasuring someone else in front of me would really disturb me and make me feel sick. this is something that ruins thousands or marriages people think it would be a good idea at the time but i really think that its something best left to a fantasy in relationships and marriages, i know it does work well for a lot of people also and doea spice up their sex life but is that a risk you would want to take.

Thanks for the response. This is not something we are close to doing. It has only ever been a discussion/fantasy I suppose. I do agree that the risks are high however I am just wondering if there are others out there who either have experienced something like this or have opinions.