Pygmalion Act 5 & Sequel

I was so excited to finally read Pygmalion!  I am a long-time fan of My Fair Lady, and couldn't wait to read the original play.  Henry Higgins is one of my most favorite characters from literature, and his personality is somewhat close to my own (at least I like to imagine so).  I remember the first time I had seen the play, I thought Professor Higgins was extending his sense of goodwill and charity to Liza, allowing her to live in his home while he fed and clothed her and taught her to use the English language properly.  However, upon finishing it, I was shocked to discover that he remains so callous towards the poor girl.  He knows full and well that she can only go back to her father in the slums and simply hope that someone will now hire her in a flower shop based solely upon her clothes and manner of speech.  Yet, he tries to send her away.  I doubt that Professor Higgins learned anything from his experience with Liza until it was almost too late. In fact, he doesnt even really show Liza any sort of affection other than declaring that he will miss her. I have always found Higgins' static mode of character to be somewhat remarkable, considering that in most other novels or plays, their time together is MORE than enough for the average literary characters to fall in unrequiteable love.