being friends is REALLY important. You need to have someone you are totaly at ease with, who you can talk to, who is always there for you, who really respects you and doesnt just love you, but really likes you as a human being.
If he really does all that, and you to him, then that is so much better than pure physical attraction. Imagine, when you are 70 you will both be wrinkly and have no sex drive. You need a friend then.