4 simple chords 

D A Bm G

You can slightly change A and Bm chord if you want

D Asus4 Bm7 G

Basically repeat the chord progression for the whole song

Credit : Leonsuresh

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Romanization lyric

han yeojaga meoreojyeoga
namjaneun norae bureujiman
nunmuri naneungeol ibyeoriran
neol manjilsuga eomneungeol I know yeah eh
tteoreojineun nal jabajwo Hello 

I hate this love song I hate this love song
I hate this love song I hate this love song
I hate this love song I hate this love song
I hate this love song I hate this love song

i sarang noraega sirheo dasin an bureuri
neoreul tteoolliji anke ijeulsu itge
i sarang noraega sirheo useumyeo bureuri
geudaega oeropji anke jigeum neoegero
nan ooh ooh ooh ooh ooh ooh hoo
nan ooh ooh ooh ooh ooh ooh hoo

nan duryeowo i sesangeun uimi eobseo
dalgwa byeori inneun neo inneun geu gose deryeogajwo
urineun areumdawonneunde You know naege
sarangeul gareuchyeojun neo Hello

I hate this love song I hate this love song
I hate this love song I hate this love song
I hate this love song I hate this love song
I hate this love song I hate this love song

i sarang noraega sirheo dasin an bureuri
neoreul tteoolliji anke ijeul su itge
i sarang noraega sirheo useumyeo bureuri
geudaega oeropji anke jigeum neoegero
nan ooh ooh ooh ooh ooh ooh hoo
nan ooh ooh ooh ooh ooh ooh hoo

ttaseuhan haessal tto dareun sesang
sseulsseulhi chumchuneun galdaebat
pureun eondeok wi nan yeojeonhi geunyeowaui motdahan daehwa
amu daedap eomneun (daedap eomneun~) mupyojeonghan jeo haneul (jeo haneul~)
huingureum dwie sumeo itgetji neon byeori doetgetji (byeori doetgetji~)

nun gamgo ne sumgyeoreul neukkyeo ne kkumeul kkwo
nae ipgae beonjin miso jigeum nan neowa sumeul swieo
[GD/TOP/DS/SR] sigana meomchwo geunyeowa nal galla nochimara
[GD/TOP DS/SR] barama meomchwo nege bonaeneun majimak pyeonji hanjang

i sarang noraega sirheo dasin an bureuri
neoreul tteoolliji anke ijeulsu itge
i sarang noraega sirheo useumyeo bureuri
geudaega oeropji anke jigeum neoegero
nan ooh ooh ooh ooh ooh
nan ooh ooh ooh ooh ooh

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