Jude, the song is by Yu_Ri_Sang_Ja (Glass Box)... the song name is 'To My Bride' ^^
i translated the lyrics as a bonus... ^^

'To My Bride'

pure white dress, shy foot steps, dreaming anticipation
trusting only me, standing beside me, precious you
although we were sad when cold gaze stood hindering us
soon you caressed me with your love

you endured my pain that was caused by reasons neither from you nor me
i promise that there will be no more tears

even blinding morning, afternoon's scent, black night sky
because of you who's beside me, they can be beautiful
i found a person to share all the world's joy and sorrow
i promise that there will be no more loneliness

as much as you suffered, i'll give you enough happiness
like now, just show me your sunshine smile, always