Marriage Cannot Find Love Like One's Heart

How is it that the truest love is always forbidden? The arrangements of marriage, though should be followed and not dismissed, leave little hope for love found in its truest form. Tristan and Isolde have a love deeper than that of Isolde and Mark, should this be? The union of marriage does not account for feeling but rather follows a pattern of ancestry to keep bloodlines. Is that love? Of course not! Therefore leaving the power of love to be diminished to wishful thinking. Should a wife have to make herself deny what she truly feels to keep the sanctity of marriage? I know that Mark feels he truly loves Isolde but is that only his Mind overruling his Heart? Isolde is not seen as a prize to Tristan, but a lover. I feel that Mark is most unruly in banishing Tristan because Isolde is not seen as a human so much as a prize. Knowing of Tristan’s love for his wife, that was won not freely chosen, makes Mark angry like a child that sees someone else using their toys. Does Mark not think his wife, perhaps, wanted to choose her own lover (if Isolde even thinks of Mark as her lover, at all)? The idea of love as a real force is often denied but where it is as powerful as the love between Tristan and Isolde, it should be cherished.