"The course of true love never did run smooth" Shakespeare tells us.
Is this an empirical observation or a theoretical one? Is it possible to conceive of a love that would both be true and run a smooth course? Or could it be that 'true'-ness of love depends upon the course being unsmooth? And not only in the sense of observability - so that it is impossible to distinguish between love true and untrue till it is put to the test - nor even in a superpositional sense with love, like Schrodinger's cat, being both true and untrue until its path roughens. No, could it be that it is only through being thwarted that love becomes true? That the translation of desire into love requires interference, the emotion not diffused but filtered, winnowed, the more exacting process generating an output more exact? Could it be that the lust, far from being perjured till action, is in fact made more truthful by being more abstract, that being never enjoyed it is never despised? Could it be, in short, that love is only true until it is achieved?
Not that true love is imaginary, you understand, but that only imagined love is true.
[Have been reading Anne Carson's brilliant Eros the Bittersweet, in case you're wondering. Oh, and see also Browning]