I’m married to a demisexual @NiceGerbil in case this helps.
Basically, emotional connection comes first, attraction comes after. So no such thing as instant attraction for him. He does notice if someone’s pretty or not, but it’s not that related to attraction. He says it’s very similar to being able to just objectively tell if a man would be considered good looking or not, or whether an animal or a plant is in good health.
In practice, if anything disturbs our emotional connection his sexuality switches off. That can be down to something being up with either of us an individual- tired, ill, stressed, working too hard, trouble from other family members.
It can also be from something between us- say if we’ve fought recently, or aren’t getting on.
If his sexuality switches off, it’s like zero chemistry.
He’s also just not motivated by sex. No chance of sexual persuasion, it just makes him feel manipulated, which damages the emotional connection and so he switches off.
He is very motivated by love, affection, intimacy, harmony, care and loyalty, building and maintaining those.
He also doesn’t subconsciously treat people differently based on how attractive they are to him. He does treat people differently on the basis of how fond he is off them/comfortable he is with them, but that’s something that comes over times, that’s based on his experience of them.
He’s also not very visual when it comes to sexuality. It’s not about looks, it’s about how he feels in himself and how he feels about the person. Appearance does play a bit of a part, but nothing more than the person takes some care of themselves and also that they are comfortable with their own appearance (as in they aren’t trying to hide anything or portray a false projection of themselves, it’s like an honesty/integrity thing).
I’m not demi-sexual. I am bi/pan, and attraction isn’t based on sex or gender for me, more on personality but aesthetics fo play a strong part. I can totally switch off a person I find very visually appealing or have very strong chemistry with if they do something to hurt me or someone else. Just kills it.
DH is only attracted to women.
I think of it as I process appearance first, then personality and if both those aspects work for me, sex and gender don’t really matter. With DH, he processes personality first, then sex/gender and if both those aspects work for him appearance doesn’t really matter that much.