Brian De Palma demonstrates the drawbacks of a film-school education by overexploiting every cornball trick of style in the book: slow motion, split screen, long takes, and soft focus abound, all to no real point. Sissy Spacek's overacting would register only 2/10 in terms of horror, but it would score well on the laugh meter.
That was purely playful when they met, quite irresistible in the middle, then finally a dramatic irony only and forever. I'm just not sure if Lolita ever loved him as an elder rather than a guardian given the the fact he did something a father wouldn't do to his daughter.