Per Helen's quote by Ambrose Bierce, I suggest that you check out the book, A Curmudgeon's Garden of Love by Jon Winokur. It's chock full of such insights!

On a more serious note, I am reminded of Promethius, whose loving act towards humankind got him chained to a mountain where he had his liver (not heart, per Greek notions) plucked by vultures and birds of that ilk.
One might also refute Helen's belief that love always ends in pain by remembering that we English speakers only have one word for several different phenomena. Read C.S. Lewis' The Four Loves for starters.

Finally, Dub Dub, if you're hurting, I am sorry to hear it! Been there, done that!