After Frisk died, you came down, met Fell and became friends with him. He was sceptical at first, scared of losing you too, but after some time, he relized you're not going anywhere and opened up more. You gained a crush on him, promising yourself you'll always make sure to make him happy. You decided to take a walk around Waterfall with him.

"Ya know.. If not ya, I dunno what I'd do. Thank ya for staying with me.."