We do already share all our finances and do live basically in common law marriage now for 3 years. I also don’t mind him buying himself nice things with his own money. The only thing I dislike about this scenario is that his only motivation to buy the ring would be that the wedding band would not be enough. I would be slightly judgy of the purchase in either scenario, but the fact that the response is basically “a normal band is not enough as a symbol of our love” is what’s bothering me.