kimi no koto zenbu 
wakatte agetai keredo 
tsuraku te mo gomakasu 
itsumo egao de 
BUT I KNOW namida wo 
koraeteiru ne zutto 
sono mune ga 
koware sou na kurai 
tsuyogatte ite mo kimi no hitomi wo mire ba 
wakaru yo sugu ni ne YOU'RE MY BOYFRIEND 
SO YOU CAN LEAN ON ME 
sono omoi ha todoi teru yo 
mune no oku ni hibii teru yo 
kotoba ni dasa naku tatte 
I KNOW YOUR HEART soba ni iru yo 
ima wa tooku hanarete ite mo 
mune no koe wa kikoe teru yo 
kotoba ni dasa nakute mo wakaru yo 
zutto YOU'RE MY BOYFRIEND 
GIRL, I KNOW kimi no koto 
GIRL, I know omou koto 
jibun wo seme teru kimi no kokoro 
AND I KNOW namida wo 
misenai you ni zutto 
fuan de mune ga ibbai no toki mo 
tsuyogatteru yo ne 
kimi no hitomi wo mire ba 
wakaru yo sugu ni ne YOU'RE MY BEST FRIEND 
SO YOU CAN LEAN ON ME 
sono omoi wa todoi teru yo 
mune no oku ni hibii teru yo 
kotoba ni dasa naku tatte 
I KNOW YOUR HEART soba ni iru yo 
ima wa tooku hanarete ite mo 
mune no koe wa kikoe teru yo 
kotoba ni dasa nakute mo wakaru yo 
zutto YOU'RE MY BEST FRIEND 
futari no kokoro tsunagu te re boshi 
futari wo hikisaku mono nante nai 
omoi tsuduke teru doko ni ite mo 
kokoro wa tsunagatte iru kara 
YES, I KNOW kimi no koto 
AND YOU KNOW watashi no koto 
shinji atteru kara daijoubu 
SO YOU CAN LEAN ON ME 
sono omoi wa todoi teru yo 
mune no oku ni hibii teru yo 
kotoba ni dasa naku tatte 
I KNOW YOUR HEART soba ni iru yo 
tooku tooku hanare te ite mo 
mune no koe wa kikoe teru yo 
kotoba ni dasa nakute mo wakaru yo 
zutto YOU'RE MY BEST FRIEND