So there is this boy. He's never really noticed me thought. He never really talked to be before. But then at my friends party he and I started talking. It was really nice we were around a bonfire and it was nice to talk. There were some other people there too but we were mainly talking and pretty much all night long we talked. The next day my best friend Sierra, him, my friend Natalie and I were going to the beach. I let him borrow my surf board. So when they dropped me off he asked if he could carry it in for me. I said yes and now I don't know what to do. I think that I'm starting to like him. But he's my best friends brother and my other best friends crush. So what do I do?

To me, he seems his interested. Personally, I wouldn't talk to a girl all night long, unless I was interested in her. And the thing with the surfboard. It seems he's trying to show you he's a gentleman, and that he cares about you. I've done the same kind of stuff.

What I would suggest is...
1. Be completely honest with your best friends. Because unless you're totally crazy for this guy, and you've told yourself he's the one, it's not worth losing two best friends over.
And 2. If you do like him, spend more time together, maybe flirt a little, see where it goes. If he does like you, and he gets an idea that you might like him back. He'll probably (hopefully) man up and ask you out. If not, you can always take the lead. Just make sure you're not doing all this behind your friend's backs. Because feelings could really get hurt.

I am by far not an expert... But I've read a lot of stuff online to help me with my own problems. So I hope this helps, even if just a little.