Run away or take a risk?

What do you do when you love someone but are to afraid to tell them?
When there is every chance of something actually happening between you both,you flirt and banter all the time when together... but then at the same time you feel scared because you dont want to loose that friendship? When its someone who is like a brother to you...and you have looked upon them as that way for such a long time...then is it wrong..? is it like dating a member of your family? I don't know.
I want to spend a day with you and sit alone together under the beautiful sun and speak the words my heart so desperately wants to say. When i first met you i didnt look upon you as anything other than a friend or even at that time only as a 'potential' friend. But then i got to know you, and found out what a beautiful person you were inside and out. I confided in you and told you my deepest secrets, you took them with compassion and love unlike anything i have ever seen come from a straight guy before. You broke down the wall around my heart and help me to love again, even if sometimes it had to hurt in the end, you were always there to help comfort me, heal me and help pick me back up again. Your love cured me in ways that i never even thought possible, and i keep wondering all the time if we were together then would i be able to make an even better person of myself?
I adore you, in fact i actually love you with ALL my heart,to have you would be a dream come ture in so many ways just..im so scared to even tell you that, because i dont want to have to deal with the consequences if you do not fell the same way, Im scared i'll fuck it all up like i normally do...
I'm standing now on the edge and i need to decide if i want to run away and be safe or jump and take a risk...and it's the hardest decision ever.