What to do

I have this friend and we have been friends for almost 7 years. I really like him and want more but I have this confliction going on in my brain. I am so fearful of being rejected, despite knowing that will be okay and learn from it. At the same time I am fearful of him feeling the same way and it becoming something. I fear that he will accept, get to know me, then realize he doesn't actually like me and vice versa about my feelings towards him. I really like him but don't know what to do... Any advice?