What is Pip and Miss Havisham's relationship like in Great Expectations?

Pip and
Miss Havisham have a complicated relationship.  She relies on him because she needs someone for
Estella to practice on.  Although she hates all men, and presumably boys, she does seem to take
a subtle interest in his life.  He continues to keep in touch with her as he gets older, and she
allows him to and even continues to push Estella his way.  She tempts and teases him, but she
never tells him the truth.  She allows him...