Comments of chapter undefined of Why am I holding on you

I really love this novel!! It's really different but differently interesting! But because of my busy schedule, i can't read and comment on daily basis!!! I love the SS couple! They are just a plate full of dog food!!! How Soham protected her and punished those ba******, and how Serene didn't question about that ,like didn't care if Soham was a killer, punisher, etc.(you know what i mean) to others. But still how was the milkshake drugged?? Did someday from the minions give Roy a drugged milkshake from the cafeteria??