Having your heart broken is really hurts. Having said that I gotta tell you that it's gotta happen before you find the best partner. I found pictures of the love of my life naked in a hotel room. I had not taken them. Ouch. I spent a couple years being a sad sack, then realized that I'm so much better off without her.
Listen to the brother's advice. You'll be fine. (Be sure to keep your eyes open!) I found my bride at a keg party playing quarters for a grad school going away party. 20 years later life is great. She can't cook, but I can spend all I want on cigars.
If I hadn't kept my eyes open I may not have spotted her. You will never know when you may find the one. I wish you the best of luck and don't do anything serious until you're 25 or older. That's the best advice I ever got.