What can I do about this guy?

I've asked on here before, but I just thought I'd get some advice again. I have this friend, Jay, & I've known him for about 7 years (I'm 18, he's 19..about to turn 20) & I've liked him for 2 & a half years. He's more my brother's friend than my friend, but we consider each other friends. Although we've known each other for 7 years, we only started getting closer in October 2006 because he & his best friend spent the night at my house to chill w/ me & my brother almost every weekend. At first, I became extremely infatuated w/ his best friend, even though I knew I kind of liked Jay on the side.After a while, Jay's best friend started being a jerk to me, so I started to lean on Jay for support. One night in November 2006, me & Jay stayed up until 8:30am just talking, alone. That was the night I realized I loved him. We got even closer over the course of the next few months & in April 2007, I sent him a message on MySpace telling him I like him. He replied saying he kind of figured I liked him, but that he only saw me as a great friend & loves me "like a sister" (since my family sees him as family, except I don't really because I have feelings for him lol) & that because I'm "like a sister" to him, that's all he'll ever see me as. We remained friends, surprisingly, & in August 2007, I admitted to being in love w/ him (well i thought I was, but it turns out I only loved him, I wasn't in love w/ him & yes there's a difference lol). We never got to talk about that, which is probably a good thing because I don't think I'd want to know his reaction.Things were awkward between us for a while, though they started getting better through a process. He ended up dating one of my best friends for a while so I was on a mission to get over him & for a while, I guess I was over him. After they broke up in March 2008, I felt myself kind of liking him again, yet I didn't pay much attention to it. Much longer story short, for the past few months, I've started having feelings for him again. We used to live in the same county & now I live 45 min. away so I don't really get to see him or hang out w/ him much. In April of this year, I saw him about 3-4 times within a few weeks because he stayed here for a few days & then I spent the night at one of my best friend's/his ex-girlfriend's house & we all hung out both days I was there. Everytime I'm around him, I still have feelings for him & even when he isn't around, I still feel in my heart that I have some feelings for him. This past week/weekend, he stayed over from Thursday night-Monday afternoon. It was a crazy week/weekend & I got pretty drunk one of the nights & he took care of me by trying to give me pepto for my stomach, caressing my back while I was trying to throw up over the kitchen sink, & helping my mom escort me to my bed. The night after, we stayed up until 10:30am Sunday morning, just talking again like we used to. We talked about anything & everything & he even brought up his 3 ex-girlfriends & the girl he currently likes, which was hard for me to hear about. A couple nights ago, we stayed up on MySpace IM talking from 2:30am-6:00am & we were mostly talking about his ex-girlfriend, who he still has feelings for, & the girl he likes now. I asked him what was it about the girl he likes, that he likes so much. He sent me a long paragraph & it kind of made me feel bad because if I could show him how I feel in the same way, I'd probably end up scaring him off. Then, as we were talking, he realized his ex-girlfriend, the one he still likes, got back w/ her ex-boyfriend, so Jay was upset. I started getting really emotional & I told him that I have to say it..."she doesn't know what she's missing worth a damn." He put a smiley & said thanks & I told him it was true & that I was getting emotional lol. Overall, in the end, we had a good conversation. I went to sleep & then when I woke up hours later, my brother told me that he talked to Jay & that Jay said he wanted his best friend to find him a girl he can drink w/ on 4th of July. My brother told him I may be there (because it was supposed to be me, Jay, Jay's ex-girlfriend (my friend) & his best friend (who is now my friend's boyfriend..I know it sounds confusing w/ out more names lol) & he said that was true, except that I'm like a sister to him & that if that were the case, he'd go drink w/ his little sister (who is 8..so I find that kind of an insult). I don't know what to think anymore because he tends to be super flirty & that's what keeps me still having feelings for him & he's such a nice guy & a great guy & he's kind of a thug, but he is really sweet & a lot different than most guys of that stereotype. What do I do? I don't know how to get over him.