I think the dude (Rose) is using that glamor magic ring so that they don't have to marry anyone.... Like how in some stories, the princess dresses as a guy and fights for her own hand in marriage.
Then again, I could be totally misinterpreting this.
Honestly kinda confused as I am left feeling that this is either super rushed as is often the case... or they just made it intentionally this way.... betting on the former.
Nothing against the translation team, thank you guys for doing a great job.