Almost nothing feels better than making a really strong connection with someone you don't know. This sort of "friendship chemistry" happens when you and a person hit it off platonically, and you end up making a new friend. It's sometimes like starting a new romantic relationship in that you want to spend much of your free time with this new person in your life. But what about those friends who've been there for you the whole time? We're talking about the oldies but goodies who have seen you through the best and worst times. While a new friend offers a fresh perspective with a different background and life experiences, your old friends have a much more in-depth frame of reference on what makes you...you. They laugh at jokes only the two of you get, know your likes and dislikes, and may even finish your sentences.