i'm trying...

yes
i want to give you much of my happiness
yes
i'm trying to be the best among ur ex

yes
i'm searching through all information about you,
all about you

yes
i'm not compared to all ur previous girlfriend

yes
i can't get you out of my mind

yes
you keep lingering me to those our bitter-sweet past memories

no
i didn't ever thinkin' become ur next ex

yet
i still can't be the best girlfriend you wishes for

but...

yes
i'm trying