Listen, cowboy, I had my heart crushed by a girl when I was 21. I thought she was "the one" too, but after about 4 or 5 months of dating her, I got dumped. We were never "together," if you will, but just went out on a few dates and had a great time. She married some doctor now and lives in a big house in El Paso. Who cares? I went to law school, got 2 law degrees, bought my OWN big house and married a real treasure who gave me 2 beautiful daughters. We've been married for 15 years now....
The point is that at age 20, you're too YOUNG to get tied down. My God, man, play the field. Learn to "play ball" (if you catch my drift). Go out, have fun, stop being so damn serious---just meet as many girls as you can and be yourself.
This reminds me of an old joke that I like to share: A daddy bull and a baby bull were on top of a hill looking down in the prairie valley below. The prairie was full of cows of all ages and sizes. The young bull says excitedly "Daddy! Daddy! Let's run down there and screw one of those cows!" The daddy bull responds: "No, son, let's walk down there and screw them all."
Got it, cowboy?