YOU SAID:
he was mortified and said so.
INTO JAPANESE
彼は悔しくてそう言った。
BACK INTO ENGLISH
He regretted it and said so.
INTO JAPANESE
彼はそれを悔やみ、そう言った。
BACK INTO ENGLISH
He regretted it and said yes.
INTO JAPANESE
彼はそれを後悔し、はいと言った。
BACK INTO ENGLISH
He regretted it and said yes.
You've done this before, haven't you.