Someone who doesn't care who you hang out with, what shit you get yourself into, or what you talk about. The only person that you trust your entire life with. The one you tell everything to without fear of judgement. The one that you have the best memories with. The one that will always mean the most to you. The only person that you could spend days and days with and still have something to talk about. The only one where nothing gets awkward. The only one that you love a lot more than they love you.
Above all, the one's trust you want above anything else in the world. The only trust that really matters to you.