I don't know much about women, but I know calling them pretentious, their emotions absurd, their conversation inane, their intelligence non-existent and their mental age toddler level probably isn't the best way to keep them around long-term.
I don't think that it's the case here. The bf talks about inane babble and implies that OP has the intelligence of a 4yo, that makes more sense if the narrator is a virtual gf bot than for a real and autistic human.
Something struck me, I first pictured the boyfriend as the classic overweight, smelly, unkempt neckbeard. Are there new visual tropes for these sorts of pseudo intellectuals or are fedora-clad 2010 Jonah Hill lookalikes still the stereotype?