beta
Even betas and omegas can have children. With the goal of making a happy family, Tatsuki (omega) and...
Omega X Beta
Omega goes in heat because he bumped into his destined mate (Alpha) and they have smut
Omega comes home and feels horrible for cheating on Beta lover
Omega keeps going into heat because the Alpha, he sleeps with Beta lover to get rid of it
Beta funds out who keeps triggering his Omega's heat and is understanding of the whole destined partner concept
Omega denies Alpha and let's Beta know that he's the only one for him