Long phrase translation: あの子とも違う秘密を持ったみたいで後ろめたい気分だ

Question

Context: 15-year boy speaking to himself
あの子とも 違う秘密を持ったみたいで後ろめたい気分だ

I brought this long phrase here because I have several points of doubt in it.

First: あの子とも doesn't seem to be the same as here or here. I suspect it is just an emphasis (like: "That kid!!"), but I would like someones confirmation, just to be sure.

Second: 違う秘密 Another secret, right?

Third: 持ったみたい Now, this one I really have no idea :) Is it even parsed like that? Like "Motta Mitai" being something on its own...

Last: 後ろめたい気分だ Ok, he's feeling guilty.

So, can someone provide explanation for these parts (specially the first and third)? A full translation would also be desirable, to see how these things connect.

Answer 1

You know what "後ろめたい" is, so let's concentrate on the first half.

「～みたいだ」 is "It seems ～" or "Looks like ～". 「持ったみたいだ」 can be translated as "It seems that I had ～".

彼女とも違う秘密を持ったみたいだ。

This sentence is ambiguous by itself. Without any context given, I thought of two possible interpretations:

彼女との間にも違う秘密を持ったみたいだ。
It seems that I made a different secret also with her.

The boy shared a secret with someone else before this. Now he (unintentionally) created another secret with this girl, too. (Yes it's something about triangle relationship.)

• あの子と = with that person (girl)
• も = also

彼女のとも違う秘密を持ったみたいだ。
彼女の秘密とも違う秘密を持ったみたいだ。
It seems that I made a secret that is even different from her secret.

• Aと違うB = B which is different from A
• も = also, even

The boy knew something about the girl's secret, and was worrying about that. But now he feels sorry because he has another secret of his own.

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And now that we have adequate amount of context given, I think the first interpretation is more likely here, although I don't know what "the first secret with someone else" actually is.