The truth is both are great and both can harm and one must learn how to detach with love when love is not reciprocated, and as you touch on, have the courage to be vulnerable.
"Eternal question is this love or not
Bedeviling all since Adam and Eve
Forest through the trees one cannot spot
Should not give so much more than I receive"
That's the first stanza of my rondeau redouble https://marcus17043.medium.com/he-loves-me-he-loves-me-not-5adbd59d3cc9