On Friday, the "Saturday Night Live" star shared a shot of Grande wearing a gold necklace with a pendant of the badge.
The sentimental piece of jewellry features "8418", the badge number worn by Davidson's father when he died during the September 11, 2001 terrorist attacks in New York City. Grande also has the number tattooed on the top of her foot, and Davidson, 24, has the same numbers inked on his left forearm.
One fan thought the necklace went too far, reports people.com.
"No girl should ever wear your dad's chain. So disrespectful," read one comment on Instagram.
Davidson then reacted by writing: "For your information, that's not just some girl, that's my fiancee. She's the greatest person I know. I gave it to her because she has my heart and that is the most precious thing I own. My dad would be so happy and love her so much."
Grande was moved, and told Davidson: "I love you more than anything."
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
