Better advice: upgrade to a fiance that isn't distracted by pointless bling.
I'm just saying it's not fair to say they were industrial abrasives before debeers marketing came along.
Or eats dessert.
Or likes flashy cars.
There's some level that is perfectly healthy, as long as it doesn't interfere with the important stuff.
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If she says "diamond ring or else I don't want you"...that's bad.
If she says "I prefer a diamond ring, but either way I want you"...nothing wrong with that.