You share hopes for the future, dreams that will never come true, goals that were never achieved and the many disappointments life has thrown at you. When something wonderful happens, you can't wait to tell them about it, knowing they will share in your excitement.
He's not perfect. You aren't either, and the two of you will never be perfect. But if he can make you laugh at least once, causes you to think twice, and if he admits to being human and making mistakes, hold onto him and give him the most you can.