It's regrettable that the human heart is so emotional, said Mr. Spock.
a fairly formal way to say, "Aaaah shiit!!" Really really regrettable, deplorable. Only use this about some big thing - North Koreans kidnapping people, or that time you accidentally wiped your nose with the Emperor's tie.
My HEART feels great!
You regret your HEART broke AGAIN - that's TWO HEARTS that broke, buddy.
But drinking WATER will decrease the pain.
that’s too bad!
残念 遺憾 悔しい