Why だからよ is considered "girly talk" and だからね is not?


So I was talking to a friend when he told me, as the title says, that:

> **だからよ** is "girly talk" but **だからね** is correct

for instance:

> 昨日は楽しい、お酒を飲んだからね (according to him, totally ok and natural)
>
> 昨日は楽しい、お酒を飲んだからよ (according to him, girly talk) it should in fact be:
>
> 昨日は楽しい、お酒を飲んだから **だ** よ

It's weird for me because, in everything else I studied so far, both this
particles seem to respect the same grammar rules (though I know this is not
really a grammar point but a "pattern" in the spoke language)

Is it correct? Is this the only case where these partciles behave differently




…からよ can be interpreted as two usages.

One is a sentence ender with だ omitted, in other words, it's interchangeable
to …からだよ, albeit it's slang among women in a certain generation or 役割語 for
female characters. （静かね is parallel to this.)

The other one is filler usage, this time, it's not interchangeable to …からだよ
but just added to the sub clause …から, which is slang too, and also a 役割語 for
the delinquent.

And the point is, the filler usage with ね is accepted in Standard Japanese.
That's why he said it's correct.

Difference between main clause and sub clause

  * main clause: それは酒を飲んだからだ (It is because I drank alcohol)
  * sub clause: 楽しかった。酒を飲んだから。(I was happy because I drank alcohol)

In the former sentence, 飲んだからだ is the predicate of the sentence or the main
clause. And particles like な, ね or よ that follow it are a sentence ending
particle, in other words, ones as in それは酒を飲んだからだよ or それは酒を飲んだからよ.

In the latter, 飲んだから is a sub clause, and particles that appear after it are a
filler.




…からよ can be interpreted as two usages.

One is a sentence ender with だ omitted, in other words, it's interchangeable
to …からだよ, albeit it's slang among women in a certain generation or 役割語 for
female characters. （静かね is parallel to this.)

The other one is filler usage, this time, it's not interchangeable to …からだよ
but just added to the sub clause …から, which is slang too, and also a 役割語 for
the delinquent.

And the point is, the filler usage with ね is accepted in Standard Japanese.
That's why he said it's correct.

Difference between main clause and sub clause

  * main clause: それは酒を飲んだからだ (It is because I drank alcohol)
  * sub clause: 楽しかった。酒を飲んだから。(I was happy because I drank alcohol)

In the former sentence, 飲んだからだ is the predicate of the sentence or the main
clause. And particles like な, ね or よ that follow it are a sentence ending
particle, in other words, ones as in それは酒を飲んだからだよ or それは酒を飲んだからよ.

In the latter, 飲んだから is a sub clause, and particles that appear after it are a
filler.

