Today I'm 36 and still married to the man who asked to spend the rest of his life with me while I was finishing my last year of college. As the full-blown grown up I am today, I don't deny that we got lucky. The statistics were stacked against us. But that doesn't make our decision wrong or misguided.
If your love is truly eternal, what's the rush? If it's real, that person will continue to be committed to you two months from now, two years from now, and two decades from now. Grow, learn, travel, party, cuddle, read, explore. Do. Freaking. Something... other than "settle down" at 23 with a white picket fence.