Marcel Proust said this quote
“ For, like desire, regret seeks not to be analysed but to be satisfied. When one begins to love, one spends one’s time, not in getting to know what one’s love really is, but in making it possible to meet next day. When one abandons love one seeks not to know one’s grief but to offer to her who is causing it that expression of it which seems to one the most moving. One says the things which one feels the need of saying, and which the other will not understand, one speaks for oneself alone. I wrote: 'I had thought that it would not be possible. Alas, I see now that it is not so difficult.' I said also: 'I shall probably not see you again;' I said it while I continued to avoid shewing a coldness which she might think affected, and the words, as I wrote them, made me weep because I felt that they expressed not what I should have liked to believe but what was probably going to happen. ”