Your friend will inspire you to express yourself more clearly and honestly. Whatever high-flying, abstract or generally not-well-founded ideas you may have, your pal will find a way to give those ideas expression and function. They'll have a sobering effect on you, helping you to stabilize your thought processes.
If you normally have trouble being decisive or mapping out a path for yourself, this friendship could be just the thing you need to get serious and find direction in your life. Your communication will be strong and beneficial to you both. You'll be able to talk honestly about any problems or issues that might come up between you. And more than that, you'll make a great working team. They'll help you concentrate and separate your better ideas from your not-so-solid ones.