It's an interesting thought, but one that I think is doomed to fail, no matter how convincing it may actually appear to be.
Being sapiosexual, part of the attraction to someone's thoughts feeling and ideas, isn't just those in themselves, but how they got there. What little psychological quirks do they have, what was their life experience that impacts who they are now, what obstacles have they overcome, all the things that make them 'tick'.
The fact that you'd know all you see is artificial, is akin to the difference of a young kid being in awe cos Santa delivered all his presents and the one who found out it's mom or dad doing it. Once you know, you can't not know. There would have to be an amazingly powerful willing suspension of disbelief, I'm doubtful that could be overcome.
Don't get me wrong, some AI would be amazingly fun, but perhaps ironically the higher degree of sapiosexuality, the harder it would be for this to be successful.
I think the best current consumer level software for this kinda thing is probably akin to Alexa from amazon, although am not sure if that is classes as 'intelligent' as we would want it. Main stumbling blocks are the need for a trigger: 'Alexa play me Bob Dylan' works, 'Play me bob Dylan doesn't. It is also inherently subservient, with no drives or desires, just a tool to give us what we want.
I am approaching this from a different angle, I am exploring animations, I feel there is a lot more room to make them human like, especially in expressing emotion. Little smiles, sighs, looking away and not holding a 100% focused gaze, fleeting micro-expressions, analysis of body language etc.
This is all just for myself of course, although IF I ever stumble across things that make a difference I will happily share.
In short, I think what you have is for now, a dream, albeit a cool one!
PSL Apologies for the spoiler about Santa