I don't want to delineate what godspousing can or can't be, but I do want to set some expectations that the larger community agrees with.
Godspousing involves choice and consent.
The large majority of people do not arrive on this earth already bound to a deity romantically, nor do the majority of people have past lives where they were married to a deity.
It happens. It's not unheard of. But it's not the normative state of godspousing.
To 'godspouse' someone is to actively choose to be in an intimate relationship with them.
Godspousing is dating. You're dating a god or other entity.
This is why choice and consent is key, because if you're assigned a deity without your knowledge, one that you're already a packaged romantic unit with? There is zero consent involved in that.
There is also zero work put into building that relationship.
Anyone who tells you that you're already in a 'spousal' relationship with a god without your knowledge or prior consent, is selling you the idea that you're a Special Person with Special Privileges.
While believing you're the main character, the Mary Sue, the most unique person ever is part of growing up into an adult, people usually phase out of it by their late teens.
The urge to be romantically locked into a relationship with a god (without your knowledge or prior consent) like a fated pair is the same urge that makes a child want to be a special person with special privileges.
It's the very human desire to be wanted and loved, to be needed by someone or something that cannot and will not abandon you, that is required by the Fates to be there for you.
That's why the fated pair trope is so popular among teenagers and young adults. We all want to be loved and needed.
Godspousing requires work, as it is an active relationship between you and a god.
Just like dating a human requires you to work on the relationship, so does dating a god or other entity.
The idea that a capital-G God loves you innately, without any work put forth, is a Cultural Christian one. Even if you didn't grow up Christian, pagan spaces in the Western world are often built by ex-Christians or were built off of esoteric texts that coopted Catholicism and Christianity.
A god does not love you automatically, but neither do they hate you automatically. Like any other person in the world, they probably lean benevolent to neutral toward strangers.
Perhaps they do feel love toward you if you're a member of their faith, or if you have a prior connection to them.
But the idea that you can be randomly assigned a god that you're automatically 'spoused' to, without dating them, without even speaking to them, who loves you and is tied to you forever and ever... is not what godspousing is.
You build a relationship with the god that you are intimately interested in. The god may ask you out on a date, you may ask them to date -- regardless, you have to do the work.