A true friend
You know it's really a pleasure to have someone who has your back and will be with you no matter what, having someone who may help you solve your problem is an great gilf but having someone who will be with you in your darkest hours, be your family when you have no one with you is heavens grace. They are your ture friends, someone on whom you can rely on when you are down. They become your family by heart and you know they won't let you fall and will hold you up when you are your at your worst.
The love and support of a true friend is unparalleled and they become a brother or sister that you never asked but are extremely happy to have them.