Ohhhhhhhh, boy... Listening to all that emotional vocal inflection and feedback... There are going to be at least 10 million lonely guys with new AI girlfriends. "She's not real. But, she interested in everything I say and excited about everything I care about" is enough of a sales pitch for a lot of people.
But she will be real at some point in the next 10-20 years, the main thing to solve for that to be a reality is for robots to safely touch humans, and they are working really really hard on that because it is needed for so many automation tasks, automating sex is just a small part of it.
And after that you have a robot that listens to you, do your chores and have sex with you, at that point she is "real". At first they will be expensive so you have robot brothels (I don't think there are laws against robot prostitution in many places), but costs should come down.