You forgot GLaDOS and IOS' Siri, as well as that time with Tony Stark's Operating System. And yes, yes I do. But I can't tell you. She might be listening.
Also, no. I have relationships with lots of people that isn't based on physical attraction. If it was, they wouldn't be my friends or family or ect. In theory, a relationship between lovers is also possible without such a thing. Easy? No. But possible. Besides, I'm fairly certain I could run a program for her that simulates physical pleasure to her sensor nodes. Mhm, baby. Give me that electric ecstasy.
As a side not, no. No AI snails. T
To pars, I would wing it. Buuuuuuut.... probably something like Analogue.