"I loved you..." by Alexander Pushkin
Not a fan of translations, but this one is surprisingly good.
I loved you, and I probably still do,
And for a while the feeling may remain...
But let my love no longer trouble you,
I do not wish to cause you any pain.
I loved you; and the hopelessness I knew,
The jealousy, the shyness - though in vain -
Made up a love so tender and so true
As may God grant you to be loved again.
It would be nice to see the original.