Clithé but classic trope When person A loves person B but is | Serenity

Clithé but classic trope

When person A loves person B but is too afraid to admit it for fear of rejection and so pretends that they don't, causing person B to think that person A hates them and is sad about it because person B is actually in love with person A and they both just spend the whole damn time stupidly pinning over each other in secret.