Is love blind?

For me to say, it depends. To say love is blind means that two people fall in love without knowing each other's character clearly. From books and stories I've read, I saw some couples blind but some actually know each other clearly. For example, there are some pairs of lovers in the series of book, Harry Potter. In Harry Potter and the Order of Phoenix, Harry Potter was with Chou Zhang, but they don't know each other's characteristic. Harry likes Chou only because she is pretty and Chou likes Harry only because she is lonely. For this, I will say love is blind. However, the other pair of lovers, Ron Weasley and Hermione Granger are together. They had been friends for seven years and do know each other very well. They became lovers because of true love. In this case, I will say love is not blind, Ron and Hermione do know what they are doing.