I feel like enough people experience this regularly that it should be more common in fiction, but like... the absolute psychological horror of someone having unrequited feelings for you. You get hit with the "I Like you" with a capital L, and ohhh no. Nononononono. AND IT ISN'T THEM. They're not like... BAD. And it isn't that you're just too self-deprecating to let yourself be loved, it's just... You don't return the feelings, and this is bad... Like FUCK I've ruined the friendship by thinking it was a friendship in the first place???
Motherfucker, you've saddled me with unnecessary feelings (platonic).
Being liked romantically is overwhelming, but I hardly see that acknowledged in fiction unless the one with the unrequited feelings is shown to be a total creep. But sometimes someone falls in love with you, and they're a good person. And by not falling in love with them back, you suddenly become a bad person?? That fucking sucks. And you can't express how much it sucks because you just broke a good person's heart, how dare you, you fiend???