<human>: Can you provide a brief rundown of the text in within 3 sentences?

We have known each other since middle school but since he was always with my brother, all we've had are small conversations and interactions. However all throughout that time, I can tell there's something there between us because he'd be very shy but there would be noticeable clues of attraction. Since I've turned 21, I've had more interaction with him and I've been able to confirm this attraction. There are some times where he's more open about his feeling but then he seems to retract after he it hits him that I'm his friend's sister. 

I know there's only so much I can do on my part especially with the whole "bro code", but what would be the best way of handling this situation so that it can move forward?

Various have people have told me to just ask my brother but I feel that should be saved until I know for sure how his friend feels about me.
<bot>: I have feelings for my brother's friend. How can I make something of my feelings with as little awkwardness ensuing as possible?