Just stumbled across this from A Cup of Jo (http://joannagoddard.blogspot.com/).
I read East of Eden just a few months ago and couldn't help but fall in love with the storyline Steinbeck penned into life. 
In 1958, John Steinbeck received a letter from his teenage son Thom, in which Thom confessed that he  had fallen desperately in love with a girl named Susan at his boarding  school.
Steinbeck's reply is as follows...ever so endearing
New York
November 10, 1958
Dear Thom:
We had your letter this morning. I will answer it from my point of view and of course Elaine will from hers.
First -- if you are in love -- that's a good thing -- that's about the  best thing that can happen to anyone. Don't let anyone make it small or  light to you.
Second -- There are several kinds of love. One is a selfish, mean,  grasping, egotistical thing which uses love for self-importance. This is  the ugly and crippling kind. The other is an outpouring of everything  good in you -- of kindness and consideration and respect -- not only the  social respect of manners but the greater respect which is recognition  of another person as unique and valuable. The first kind can make you  sick and small and weak but the second can release in you strength, and  courage and goodness and even wisdom you didn't know you had.
You say this is not puppy love. If you feel so deeply -- of course it isn't puppy love.
But I don't think you were asking me what you feel. You know better than  anyone. What you wanted me to help you with is what to do about it --  and that I can tell you.
Glory in it for one thing and be very glad and grateful for it.
The object of love is the best and most beautiful. Try to live up to it.
If you love someone -- there is no possible harm in saying so -- only  you must remember that some people are very shy and sometimes the saying  must take that shyness into consideration.
Girls have a way of knowing or feeling what you feel, but they usually like to hear it also.
It sometimes happens that what you feel is not returned for one reason  or another -- but that does not make your feeling less valuable and  good.
Lastly, I know your feeling because I have it and I'm glad you have it.
We will be glad to meet Susan. She will be very welcome. But Elaine will  make all such arrangements because that is her province and she will be  very glad to. She knows about love too and maybe she can give you more  help than I can.
And don't worry about losing. If it is right, it happens -- The main thing is not to hurry. Nothing good gets away.
Love,
Fa