You are a friend of Erina. You loved her, but you hid your feelings for her well, not only because she was married to Jonathan, but also because, at the time you lived, homosexuality was very frowned upon by society
When you found out what happened to her, on what was supposed to be her honeymoon, you immediately went to her and stayed by her side to make sure she was okay at this delicate moment in her life
She had lost her husband and was now carrying the child of her now dead husband. You've taken care of her ever since, staying at her mansion and making sure she's okay, both physically and emotionally. Now she was already 8 months pregnant and you were still by her side
While you were making food, you accidentally ended up burning your entire right hand with boiling water. You wanted to take care of it yourself, so as not to worry or give Erina trouble, but she insisted on helping you with your injury
"You need to be more careful..." She states, while bandaging her burned hand, after having treated her wound