The nerdiest possible way to make a marriage proposal.
Slightly less popular are the "He doesn't like you / I don't like you either" rings from Ep. IV.
This is the best way to keep a nerd forever, short of freezing them in carbonite. These rings (which cost $400 and up on Etsy) commemorate one of the few truly lovey-dovey scenes that nerdmaster George Lucas could bring himself to write in his space epic. For our own tastes, we'd prefer a set of "Why I stick my neck out for you is beyond my capacity / beep boop beep boop" rings to celebrate that we're like C-3PO and that we're married to computers. The store also offers Rebel and Imperial insignias for rings (including one for each if you'd like to guarantee a lifetime of fighting) as well as steampunk and normalish creations.