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> "ちゃんと話した結果…お互いに、 **思い込み** だとわかったっつうか…"

The English translation was "We talked it over, and we realised we were both
just confused." But I cannot understand "思い込み" here. The speaker and a woman
were about to become lovers (付き合う). But after some happenings and talking, he
discovered that actually some other boy was more important to her life than he
(speaker), and he (speaker) did not really love her that deeply but was
attracted to her because she was very kind and gentle to him.

Judging by the context, I guess that the word would mean something like 勘違い,
誤解, "wrong perception", "misconception" or something like that, but if I look
up dictionaries, the meanings were "deeply believe" or "firmly decide".

PS: If you need more context, see the transcript at
<http://anicobin.ldblog.jp/archives/56894558.html> . You can use Ctrl+F to
find the position where that sentence was said.
CC BY-SA 4.0
2020-06-24T13:43:53.023
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2020-12-28T03:42:38.470
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question
meaning usage
「思い込み」can mean something like "misconception"?
Simply, 思い込む has several meanings:

  1. [common] to firmly (mis)believe; to to make a (wrong) assumption 

> 彼は自分がテストに必ず合格すると思い込んでいる。

  2. [uncommon] (≒決心する) to resolve; to make up one's mind 

> 彼は一度思い込んだら信念を曲げない。

  3. [rare/obsolete] (≒思い詰める) to think hard; to worry deeply; to be obsessed 

> 彼は思い込んだ様子で私に話しかけてきた。

大辞林 says 思い込み can mean "firm resolution", but at least in modern Japanese,
思い込み almost never means that. Today 思い込み is almost always the nominalized
version of 1., i.e., "(wrong) assumption". 思い込みの強い人 is a negative phrase that
refers to someone who easily jumps to a wrong conclusion rather than someone
who is determined. While 勘違い/誤解 tends to refer to casual ones that can be
corrected easily, an 思い込み is often hard to amend by words.
CC BY-SA 4.0
2020-06-24T15:20:26.540
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2020-06-24T15:57:18.583
2020-06-24T15:57:18.583
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answer