Creator (1985)

[Deep Whet 10]

Not sure how to suggest this without many spoilers, soooo...

The science professor (Peter O'Toole) is trying to grow his dead wife, but they don't really say how that will work, or that he is ok with having his wife just as a baby.
He gets a horny teenage girl(Mariel Hemingway) to donate her eggs, she agrees because she thinks he will marry her. SO you get this weird happy getting to know you scene then cut to him as her gyno, checking her out.
The student(Vincent Spano) has a robot butler who can juice oranges and electrocutes him if he sleeps in, but he never mentions it and it isn't addressed for most the movie, it's just there.
The young romance is pretty creepy, girl(Virginia Madsen) moves out because her flatmate was trying to bone her, so our protagonist uses this same ploy with her. He also tricks her into letting him rub her with sun-cream and he goes straight for her butt and looks like he's pretty much fingering her.
In one day they go fro beach frolic, to sun-cream rubs, to kissing, oh actually before they kiss, they have a shower and he soaps up her bewbs. Then they bone and he asks her to marry her and thanks her very much when she says yes.
That love scene is intercut with the prof's wife just hanging out, I think just in his imagination and not as a ghost.
The girl gets pregnant, guy gets shitty, she goes to hospital, falls into a coma and the doctors immediately want to cut off her life support "She's pretty much dead already").
I haven't finished the movie yet, had to come here first.

update- watched the rest, it was pretty boring, probably not bonkers enough for HDTGM.