What is the Meaning of There is no evil angel but Love?

the full quote is

"They do not love that do not show their love. The course of true love never did run smooth. Love is a familiar. Love is a devil. There is no evil angel but Love."

If you think about it, love - when you have it - can make you feel the happiest and most free in your life, but when you are without it or it is causing you pain, it can bring you crashing down to the lowest of lows. In that sense, it is an evil angel - a paradox of sorts because angels are pure and innocent, and the contrast that exists in the "evil angel" idea comes from the fact that love can hurt you or help you. Sometimes it is easier to live without it, for you feel no pain from scorned love, but it is a lonely life without love.

Much like how fire can warm you or burn you if you are too close

• such as in Mary Shelley's Frankenstein - to think one could ever

fully understand love is like walking a tightrope over an alligator tank. As quoted, again, by Shakespeare, "love to faults is always blind, always is to joy inclined. Lawless, winged, and unconfined, and breaks all chains from every mind."