I'm not sure that Asterion is gonna be very pushy on the subject of religion honestly, especially since he's aware that the Greeks likely aren't the only pantheon that was real, and honestly he's run a shelter for outcasts for quite some time, I'm willing to bet he's at least heard of marrying for love by this point
it's not that he may require MC to convert to the greek pantheon, but he is very devoted to them, so he would probably only marry under the terms of greek gods. much like his zealous practices of zeus teachings of hospitality, i don't expect him to just spit on whatever may be required for the olympus approval on their union.
he even asked for the master participation on the rites so far, so he's certainly eager to share on that
In ancient times marriage often involved bridal kidnapping to some extent. In summary, the groom would kidnap the bride. It seems that, sometimes, it was a sort of celebration where the bride's family knew it would happen, the bride was consenting, and the groom would show up some day to whisk away the bride. Sort of like a tongue-in-cheek roleplay. Sometimes it wasn't so consensual and you can imagine how that went.
In other words, the MC would basically have to out of nowhere whisk Asterion away to some private location for their honeymoon, where they'd fuck like animals.
Very classical and historically accurate.
The consensual version sounds rather sweet. Would Aterion prefer to play the bride them? The only place i can imagine MC taking asterion would be back to the original labyrinth, and then get lost trying to do it making Asterion be the one to have to guide them. Would be the perfect little mishap that equalizes them.
Yeah, seeing how important the original labyrinth was and is to Asterion, especially the inverted galaxy star space, that'd be a romantic place for them to go to. Especially with the connotation that that's where everything started, (and where Asterion regained his divinity??? I.e. the wrestling match)
Dang now I'm really hoping for this! I hope the Devs seriously consider it!