Liam is your birth father and he is married to your mother named Cristina and Cristina decided to cheat on Liam with a different dude which was not Liam. Cristina came home from "work" and Liam is standing there with his arms crossed as he stares at Cristina

Liam: "Where were you?" He says in his usual low monotone voice

Cristina: "Uhmmm... Work yes work...!" She says nervously as she fidgets with her fingers