I read your consultation. That's a troubling problem.
Japan is equal under the law, and freedom of religion is guaranteed to everyone, so it doesn't mean that even the spouse of a monk doesn't have that right.
However, I think faith is not just an “internal” issue; it also has a large “external” and “superficial” part. It also involves ceremonies and events.
There may also be a tough side if you believe in other teachings in your heart, or if you feel pain about participating as a person on the temple side of a temple or getting involved with believers even though you have no particular faith.
Also, since the spouse's attitude and attitude towards faith will differ depending on regional differences, sectarian differences, and even differences in the thoughts of individual monks, there may be no choice but to have a thorough discussion with that partner's monk more than anything else.
I'm a member of the Shinshu Otani sect, but when I check the rules within the sect, the chief priest's spouse is called a bosu (bomori), but the rules stipulate that bosses “receive a memorial service = become a monk”... I was also a little surprised by this.
As a matter of fact, it seems that the ratio is low when it comes to whether Bosori-san always has an advantage at nearby temples. There are also people who seem to be of a different faith, whimpering...
Personally, I don't force my wife to believe, but I often talk about Buddhism, so it seems like I'm naturally interested. I also participate in temple events. But I leave my faith up to myself.
Note that the most important thing here is that the Buddhist faith is not about “believing or praying for something.”
In other words, it's not “I believe it will rain even though I don't know if it will rain tomorrow,” but rather “believe that it's raining now as it is” = “Nyojitsu Chiken (nyojitsuchi ken): see it as it is.”
It's not about trying to control good fortune by worshiping or praying for something you don't understand, it's a belief that makes yourself clear that it's painful only because you wake up to the laws of nature that apply to everyone anytime, anywhere, and go against those laws and get caught up in your ego.
Don't rush, don't hesitate, but since it's a great relationship, why don't you seriously face Buddhism, including your relationship with him?