Guys, I need your help. So I guess I'm in a bit of a sticky

Guys, I need your help.
 So I guess I'm in a bit of a sticky situation. I don't know what to do and I really need advice. So here's the story: This guy named Josh liked me, and last night I told him the I didn't like him in that way, and that I liked someone else. Then he got me to tell him who that someone was, and it's Garrett, his best friend. Josh said he'd talk to Garrett about me and see what he thinks, because even though his heart is broken, Josh still wants me to go out with Garrett so I'll be happy. He talked to Garrett and Garrett said that he would consider it and that he might like me too. And then all today Garrett was looking at me and acting strangely. But that's just one part of the problem. The other thing, is that I've liked this other boy, Brian, for about 7 years now. He's just kind of always been in the back of my mind, I've liked and gone out with other boys. Oh, and Brian's also my best friend. Last year, Brian liked me and he was going to ask me out, but then I started going out with this other boy, but that doesn't matter in this story. Anyways, Brian stopped liking me once I started going out with this other boy last year. And I feel like it might be the same this year, and I don't want the same thing to happen if I go out with Garrett. I like Garrett and I want to go out with him and I probably have a better chance with him than I do with Brian. But I don't know whether I should continue waiting for Brian, or go for Garrett, and that's where I need your help.
Please please please please comment and give me advice. If you have any questions, ask. And if you want to know their discriptions, I can tell you.