Hugs <3 I hope he comes around soon.
When I come across stubbornly wrong people I try to remind myself that it's not my responsibility to correct their misapprehensions, even when they're about me.
It's great that he's talking to you, anyway. Best wishes to you and your fiancé(e?).
I'm generally pretty calm and to-the-point, to the extent that I can come across as pretty cold at first. But if there's something that gets to me, whether it's happy / sad / infuriating or whatever, I can let it out and process it now, rather than bottling it up. That lets me appear as even more of an emotionless robot the rest of the time! Yay, I guess?
I have real trouble empathizing with people around me, even if I can read them on a conscious level. I guess that either makes me autistic or a sociopath.