Faithful trust (omegaverse)

When Deku catches his alpha (katsuki) cheating on him, an omega, his life becomes in emotional roller coaster.
Katsuki never intended to hurt his Deku but, was influenced by the heat of the moment. Will Deku forgive his alpha or move on to be with someone he trusts. When the going gets tough Deku will have to persevere with a smile on his face, if he can.

In this au there are three dynamics: omega,beta,and alpha.