Would probably help to know how old you are since you specify men younger than yourself. If you are 97 = not a problem, 22 = narrows the field considerably, 15 = illegal many places.
I'm curious as to why you specify that they NOT know each other - many of us women with two men find that it works better if they are at least cordial (mine are best friends). Is this a BDSM thing or something? (you should probably specify)
Me: poly bi female, in an "open-but-not-looking" V-plus with -
MrS: hetero polyflexible male, live-in husband (24+ yrs)
Dude: hetero poly male, live-in boyfriend (5+ yrs) and MrS's BFF
SLeW: platonic girlfriend and BFF
Lotus: "it's complicated"
+ "others" = FBs, FWBs, lover-friends, platonic G/BFs, boytoys, etc.
My poly blogs here:
The Journey of JaneQSmythe
The Notebook of JaneQSmythe