It is always difficult to write a good relationship between three men. Though, there's no problem of convincing Mason to try a threesome because his last relationship was with two men, too. The age gap doesn't seem to be a problem for either of the guys, as well.
But that doesn't mean that they don't have to face some problems before their HEA.
I liked that the Doms were convinced that Mason needed professional help and got a good shrink for him. All these BDSM stories where problems of the past or traumatic happenings are solved or healed by domming a sub are just annoying. So it was nice to learn that these Doms see a life apart from their BDSM world.
Unfortunately, I just didn't see any chemistry between the men and their developing relationship couldn't convince me at all.
So it was nice to read but not more and thr flaws prevented me from enjoying the story more.