Gregory David Roberts said this quote

One of the reasons why we crave love, and seek it so desperately, is that love is the only cure for loneliness, and shame, and sorrow. But some feelings sink so deep into the heart that only loneliness can help you find them again. Some truths about yourself are so painful that only shame can help you live with them. And some things are just so sad that only your soul can do the crying for you.