An alpha and omega are set up to wed. They meet for the first time in person at their engagement party. They are super cordial and nice to one another. Alpha seems to know everything about the omega. Alpha’s two conditions to the marriage are having the omega move in with him right away and the omega must quit his job. The alpha has one of his bodyguards tend to him while he is at work, keep an eye on him while he isn’t there. That bodyguard ends up tending to him in his heat? Keep it from the alpha? Some sort of ish or perhaps just sharing of the omega?

Hmm, probably a /sharing plot. Keeping it from them wouldn't really work since they could technically smell it on each other. Would be fun to see the two big alpha bullying the little omega during his heat though

body guard is a beta. This is strictly two tops and a bottom, no crossover between guard and alpha. Only alpha can get the omega pregnant.