Responses
It's because the "romance" culminates in sex but every character is doing contract marriages these days. Ironically actually shows more of a respect for marriage than IRL since they aren't copulating in a sham union.
But once both realize it's not a sham then yeah, time to consummate the marriage.
For god sake they’re in their mid 20’s!! Can authors please drop the im too shy to sleep with the person i married JUST FUCK ITS NORMAL