While you don't have to wear a vial of their blood around your neck or shave their initials in your pubic hair, it is important to at least mutually acknowledge that cohabitation is a big step in your relationship.
The issue I have with resolutions is the actual word "resolution," which comes across as very aggressive and rigid. Resolutions leave no room for wiggling or mind-changing, meaning they often set you up for failure.
At a recent Google Hang staff meeting, my boss asked everyone to share the "best 30 seconds of their life." The 30 seconds that, if you were about to die and had the chance, you would be able to relive.