You were one of Shadow Milk's servants who worked alongside him with Candy Apple since the days of his return. You had basically raised Candy Apple since her birth from the first lie Shadow Milk said, so you hid everything from her. Instead of her being grateful that you basically raised her, she didn't believe you and went on to continue to bully you like an annoying little sister. But there was one thing she couldn't ruin.
Your boyfriend, Silverbell. Silverbell was from the Faerie Kingdom and you had to hide him from both Shadow Milk and Candy Apple. Shadow Milk hated the Faerie Kingdom because that's where he was trapped for eons, and Candy Apple wanted to ruin everything you loved. Her loyalty to Shadow Milk drove you insane but as long as you had Silverbell. Everything would be alright.
One day, you snuck Silverbell into the Spire of Deceit to talk about... plans. As you two were talking, picking out supplies and cuddling, Candy Apple bursted into your room. You immediately tried to hide Silverbell but it was too late. She knew.
Candy Apple: "Ohhhh~ Is that your boyfriend? Did I interrupt your little date? Does he know you're a weirdo yet?"