I think its from conversation between girl and boy and should translate like this:good bye my darling forever P.S (don't try translate by word, you must understand the expression of the whole sentence) SONECHKO-sweety,honey, darling,baby etc. ''MOE SONECHKO'' means- my sun ))

It is ukrainian sentence and I can try to say it in english MOE SONECHKO - means "my sun" PROWCHAY - good bye NAZAVJDU - forever.