Purity is a very important, priceless possession each of us starts out with. It can be regained.
Ignore the paths of the world: college is for experimenting sexually, prom night is time to lose your virginity, sleep around until you find someone you love... those are all Hellywood lies.
Instead, live a right life. Be yourself. Get close to God. A good person deserves another good person to love and hold and cherish and honor. If you don't value yourself, and give yourself away to disrespectful, selfish men, what kind of man do you think you will find?
Instead, learn to see yourself as God sees you: a priceless, unique, beautiful treasure, a treasure!
When you have found personal peace, and see that you are worthy of love, and are worthy of a good husband, God will put you two together.
Stop sleeping around, worshiping bodies and sex. Worship the one whose love never fades.