In the future I'd love to get another ering, but it'll probably be under the guise of an "anniversary ring," so maybe it will seem less weird to people.
I tend to be sentimental, and I'm quite sure that my original ering will always be my "primary" ring both in how often I wear and how I think about it. That's part of why I wanted to make sure I had it made pretty much perfectly the first time (except for the option of upgrading to an Amora gem down the road, but I'll probably be the only one to notice the change in the centerstone, if we're honest). I am not opposed, however, to the idea of owning other "engagement style" rings that I also wear on my left ring finger, especially if it's something given to me by my SO.
That said, I'd just do like you said and talk to him about it. Maybe it can be an anniversary or birthday gift sometime down the road!