Tsukete To Iimashita Yo Ne... — Gomu Wo

(Gomu) means "glue" or "adhesive."
(tsukete) is a verb that means "to attach" or "to stick."
(to) is a grammatical particle that indicates the direct object of the sentence.
(iimashita) is the polite past tense of the verb (iu), which means "to say."
(yo) is a sentence-ending particle that is often used to add emphasis or seek confirmation.
(ne) is another sentence-ending particle that is used to seek agreement or confirmation.

Applications in Media and Literature

In anime, manga, or literature, such a phrase could serve to develop character relationships, highlight attention to detail, or illustrate misunderstandings. It could be used comically, for example, in a situation where a character misinterprets or forgets instructions, or dramatically, to reveal deeper issues of trust or communication.

Nanami, depicted as a cold but voluptuous character, initiates a sexual encounter with Mamori. The Conflict: gomu wo tsukete to iimashita yo ne...

Because someone did tell us. And they were right. (Gomu) means "glue" or "adhesive

The yo ne is crucial. It’s not an accusation—yet. It’s a plea for acknowledgment. The speaker is not screaming. She (and in 90% of fictional depictions, the speaker is a woman) is speaking in a low, exhausted voice, trying to remind her partner of a boundary that was agreed upon but then ignored. Applications in Media and Literature In anime, manga,

He apologizes. They go to the clinic together. The story becomes about healing.
He deflects. “You’re being dramatic.” The story becomes a thriller, a horror, or a tragedy.