J : 我係有講到嘅，但係唔緊要
J: I did mention it, but it doesn't matter.

Cantonese Sentence Breakdown

我 ngo5
I
me
my
us
we
our
self
係 hai6
(Cantonese) to be
to connect
to relate to
to tie up
to bind
to be (literary)
to involve
relation
relationship
consequence
yes
indeed
right
有 jau6
also
again
講到 gong2 dou3
talk about
嘅 koi3
indignant
generous
to sigh (with emotion)
但係 daan6 hai6
(conjunction) but
唔緊要 m4 gan2 jiu3
(slang) it doesn't matter; no worries