I remember watching this movie about four years ago, and loved it, but can’t find it again. A woman, who was quite rich if I remember correctly, falls in love with a man who helps with her garde. The man either has autism or some other learning/social difficulty. I think I remember that she teaches him to read. At the end of the movie they end up living together in her home. I really wonder if I’ve dreamt this, since I can’t find it anywhere. I saw it on tv and it was in colour, but that’s all I can remembe.
Possibly: Being There (1979) – http://www.imdb.com/title/tt0078841/
I think you might be remembering “Tim,” starring Mel Gibson.
http://www.imdb.com/title/tt0080024/?ref_=nm_flmg_act_50
There was a made for TV movie that was based on the same book as “Tim” called “Mary & Tim.” Maybe that’s the one you saw.
http://www.imdb.com/title/tt0117000/?ref_=fn_al_tt_2
Mozart and the Whale (2005)