I hate when people judge Jenny. She was an abused child, and gosh darnit, why didn't she want to marry a mildly retarded man when she was of normal intelligence?
Come on. Get real. She had issues, and most of you wouldn't marry someone with a compromised level of intelligence either, at least not early in life, I think she went back to him in the end because of Agape love in her final year(s), not because of any real Eros.