The most important thing you need to understand, Susan Patton, is that we single women choose not to define our ultimate worth by our relationship status. Yes, we are single. Yes, we are spending Valentine's Day without a romantic partner (probably not crying into our takeout sushi). We may or may not feel satisfied with those things. But we are also so, so much more.
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.
Let's just be honest here -- I always thought that if I hadn't found you by now, I'd be totally bummed out and depressed. I thought I'd be a nervous, incomplete wreck, writing this letter as I sat on my cat-infested front porch crying salty tears into a liter of cheap wine. After all, I mean, hello, I'm almost 30!
As with coding and management and matters of finance and marketing, relationships have a learning curve. You learn the basics of "relationshiptiva" (yes, I made up that word): How to deal with sexual etiquette, mundane everyday things, scheduling, and appropriate meetings with close friends, and some equitable plan for who's supposed to pay for dinner or wash the dishes this time. These are basics. And if you're learning them in your thirties, it's going to be much harder.