The next day Blue Eyes said nothing about the strange maiden, and Rainbow began to be jealous and sad. She tried not to think of it, but she could not get rid of the thought that perhaps Blue Eyes loved somebody else. The next evening they again camped out in the wood, and Rainbow said she was tired and lay down to sleep early; but she only pretended to go to sleep, and she was really wide awake.
As soon as Blue Eyes thought that Rainbow was asleep, he blew a note on his glass pipe, and once more the strange maiden came out of the wood, and she and Blue Eyes talked together in a whisper, and once more Blue Eyes seemed to look quite different, and not at all like a glass mender, only, as it was dark that night, Rainbow could not see him distinctly.
The next morning Blue Eyes again said nothing about the strange maiden, and Rainbow was sadder than ever. If Blue Eyes would only explain, she said to herself, everything would be all right. So as they were riding through the wood, Rainbow said to him:
"I saw you in the wood last night talking to a strange maiden; and, Blue Eyes, you looked different. I am sure now that you are not a glass mender; and now that I have seen you talking to that strange maiden, I shall have no peace until you tell me who you are and who she is."
"Alas, alas, alas!" said Blue Eyes. "Oh; Rainbow, why could you not trust me? I must tell you now, whether I wish it or no, but you have destroyed our happiness, and I shall have to leave you. My name is Spring, and I was talking to my sister Summer; and now I shall have to leave you, for I can only take a mortal shape as long as nobody knows who I am."
Then Rainbow wept bitterly, and said:
"Do you mean you must leave me for ever, and that I shall never see you again?"
"There is one hope left," said Blue Eyes. "We shall meet again if you are able to find me. You will have to search all over the world, and you will not find me until you recognise my look and my voice in the speech or the look of a human being; and if you fail to recognise it, when it is there, you will never find me at all."
"And when I recognise you either in the speech or the look of a human being," said Rainbow, "what must I do then?"
"Then," said Blue Eyes, "you must say this: