One minute he loves me, the next minute he could care less..

Ugh such a long story, but I need people to talk to. People other than friends who are in to it for the drama and stories.Basically, me and this guy met through a Fashion Forum. I feel lame for even saying we met online, but it wasnt a dating site, it was just a common interesst of ours that led us to meet up one day, and well, we clicked. I had always wanted to go to NYC, so we thought how perfect would that be? I go to NYC for the first time in my life, finally meet him, and have a free place to stay! (I talked to him for 5 months every single day on the phone and webcam for hours, spoke to his Mom and Grandma on the phone, and talked to people on the forum who knew him in person, so please don't think I ran off cross-border to meet someone from the internet lol)Anyways, I get to NYC, and he's there. We instantly click. By the 2nd or 3rd day of being there, we were holding hands, kissing, cuddling, it was amazing. I visited in August, again in December, and again in March. He came to Toronto to visit me in April, May and July. We saw eachother pretty often, and it didnt feel too LONG DISTANCE-ish. But we never were officially in a relationship because of the distance. Well Jan 31, 2009, we started saying I love you, and talking about our future, looking at promise rings, everything. But things started to go downhill in about July.I went to visit him in NY this August, and was supposed to stay for almost a month, but I left after a week. He was never home, and when he was home, he would be in his Mom's room eating or in the living room watching TV, and not spending time with me. I basically spent a whole week inside his room, watching TV, on the computer, and went swimming with his little cousins. I mean, it was awesome to spend time with his little cousins, but I was there for him, and to spend time with him.We started arguing over everything, get annoyed at eachother, and one night I was on that fashion forum, and on the little chatroom box they have, I told everyone that Me and Ed were pretty much done. They ALL know that Me and Ed have our little thing going on that stemmed from the forum, so I dont really feel like I was airing out our business. It's mostly guys on there so theyre asking things like Oh, did you guys have sex, did you let him hit it? And well, I said no, because that's the truth. I havnt had sex for over 2 years, and I am waiting till the time is right and that I know this is for real.Ed saw this on the forum (people told him), and he took it as I was trying to make him look bad, and like a little b*tch. (I mean, a bunch of guys saying "Oh you let her stay with you for weeks at a time, and she doesnt give you ANYTHING?", has to feel a little demasculating.) And after that he started to be really rude, and hurtful. He told me he wants me to pack my sh*t, and he wants me gone by the next day. Whatever, we talked it out, but he was still acting like an asshole, and being bitter towards me, and yelling at me, so I booked a bus ticket home for the next day. We got into another big argument and I just left.We talked it out again, but ever since then he's been going back and forth with this "I still love you", and then the smallest thing happends and he's saying "Whatever, F*ck it, Im done with you, dont effing talk to me, etc etc". It's such an emotional rollercoaster, and I cant take it anymore. It's like I want this to work, but he wont let it. He even came to Toronto last week and we were PERFECT again, the way we used to be. I even wake up at 8 am on my LAST free day before school, just stop drop him off at his bus so that we could spend as much time as possible together. It just hurts a lot because I dont understand how someone can tell you they love you one minute, and then the next toss you away like a piece of trash? Like i've been hurt so many times, and he knows this, but it's like he just really doesnt care. BUT I JUST DONT UNDERSTAND IT. How can you want to spend the rest of your life with someone, and talk about having children, introduce them to your whole family, tell EVERYONE you love them, but then the next day (literally), "OH I dont care, stop talking to me, Im done with you, I dont love you," I just dont know what to do anymore. I WANT to keep trying and call him to talk to him, but I've done that like 7 times and put in so much effort that I just feel DRAINED. I have no more energy left. I just dont want to give up and think that I could have made things work if I only fought for us. But there has to be a point where I cant do anything else.Like Im just sitting here crying, and that's what I've been doing ALOT of. I just dont want to throw this away, or let it go. But I also dont want to cause myself any more pain by pushing for something thats not there.I just really dont know what to do. Any ladies on here have any advice?