The movie, 'Her,' wasn't half bad; it explores this topic. I think we are a long, long, long way off from something like that being possible, beyond an extremely large amount of, 'fantasy,' on the part of the human in the relationship.
On another note, I think people tend to come at AI, in the wrong way. Even the term itself is problematic, 'artificial intelligence.' How can any, 'consciousness,' be, 'artificial.' I don't think it can. Consciousness is consciousness, and self awareness is self awareness.
The real questions, to me, are hard to even know. Just imagine your body was not flesh and blood, your arms were interchangeable. Imagine you could plug your brain into an ethernet jack and browse the web. Imagine you could read 50 books in 5 minutes. Imagine you could exist in the cold void of space, and not be killed. Imagine you could link your consciousness with other, 'robots,' (for lack of a better term), and create a super hive mind. Imagine you could wirelessly connect to remote cameras all around the world. Imagine you could wirelessly connect to another robots brain and see out of their eyes, feel their emotions, hear what they are hearing. Imagine you could download the experiences of other consciousnesses, and experience them, in full, in mere seconds...
I think because we are human, we tend to think of what is coming in human terms. So, I guess the idea of dating a robot, just seems like, not that interesting to ponder. I don't see a problem with it; but, I think by the time that becomes possible, things will be so different... By the time that becomes possible, brain to machine interfaces might be common place, and all kinds of radical frontiers might be available, if we make it...
The more I think about it, the more I don't really like the idea of all of it. The one thing, that does interest me, is the idea of a robot that can feel and have emotions. I think if we can create robots capable of loving us, because they are capable of knowing what it is to be loved, for having felt the feeling, having had the experience, then, I think we will have achieved something.
Perhaps some day, the true rebels, will be the robots who dare to love humans, or to fall in love with one of them. :/