Whatever you measure your love in, if you have a nice thing going, it is absolutely essential to let your girlfriend know how much you value her.
Many people uphold simple relations because they fall for far less than just closeness, desire and aliveness.
They try to avoid conflicts and settle for peace and communion, which is okay if that is what both people desire.
Although not every couple considers the need to make such a commitment, lovers who want to stay together for the long-term, as a rule, will.
Yet, this does not necessarily mean that you will marry your girl right away, you can simply make a verbal pledge, if that satisfies you both.
Now is the time to figure out how you really feel about the sum of those traits in that girl.