Trouble in Paradise *PLEASE READ. ADVICE NEEDED!*

Ok let me get straight to it...my ex and I got back together (you remember the previous post when I said I hated to see my ex and his girlfriend together? Well yea Im talking about THAT ex). So anyways, him and his girlfriend broke up and she started going with someone else immediately after they broke up. He told me that he really didnt care but I can tell that he's still upset about it. I actually think that he is hurt. Him and I had been broken up for 9 monthes and he has been begging to be with me for that long. I never gave him another chance because I didnt feel that he was ready for anything serious because 1) he's never been in a serious relationship before so he doesnt know what exactly to do and 2) he told me he wasnt. So he started going with just about anybody so he wouldnt be lonely and do whatever they do in "non serious relationships". Then around August, he started telling me that he was ready to be serious and not hurt me again blah blah blah. I still didnt want to give him a try because I didnt feel like going through another "hell week" (the week after him and I broke up) again because I had a feeling that thats exactly what was gonna happen. Anyway, once him and that lil girl broke up (and yes she is considered little to me because she's like 15 or something), he tried to get back with me because he said he was ready to be the man that I wanted him to be. So okay I decide to give him a 2nd chance. Now tell me why it has been only 4 DAYS that we have been together and I am ALREADY pissed off by the things that he does...or doesnt do shall I say! He doesnt even make an effort to come see me before or after class. I mean, Im not saying that he has to come see me after every single class but at least come see me after 2 classes. It is starting to bother me for real! He knows where my 4th period is and he doesnt even try to come see me before class starts and his class is like 4 doors down from mine! So it aint like he's gonna be late (unless he's walking SOMEBODY ELSE to class...). When him and I werent together, I'd see his ass before my 4th period EVERYDAY. Now that we are together, I hardly EVER see him and when its times that I catch him in the hallway or before my lunch starts, he is always talking to some dudes or a group of girls. Everytime he's talking to someone, he acts as if he doesnt see me. I always have to be the one who initiates the first move by giving him a hug and when I do give him a hug, he says "wassup" and keeps walking. DOESNT EVEN ATTEMPT TO WALK ME TO CLASS OR AT LEAST HOLD MY HEAVY BOOKS OR MY HEAVY BOOKBAG. He is showing me NO EFFORT whatsoever to make this relationship work. He was begging and crying and claiming how it wasnt fair when I kept telling him no everytime he asked me out, but now that he's gotten what he wanted (or at least I think he has) he doesnt even appreciate it. I also got so mad yesterday because when I got home from school, he texted me and said that he hadnt heard from me all day. Then I told him that it was because I try to see him and try to talk to him for a measly 30 seconds before class and he's always talking to someone or either I never see him. I also told him that I was trying to see him before 4th period and he was nowhere to be found. He then asked why didnt I text him and tell him to come see me....I ALMOST CAUGHT ON FIRE THEN!!! WHY THE HELL DO I HAVE TO TELL YOU AND REMIND YOU TO DO SOMETHING THAT YOU SHOULD ALREADY KNOW TO DO! ARENT YOU MY BOYFRIEND??? SHOULDNT YOU DO THAT STUFF AUTOMATICALLY??? I then refused to ever txt him or call him. I'll let him talk or see me when HE has time outta his SO SOOOOO BUSY SCHEDULE. I called my best friend last night and talked to him about it because it was taking everything in me not to explode. We were on the phone for about an hour and then my BOYFRIEND (if I can even call him that), calls me. We talk for 2 minutes (and mind you, he was txting his HOMEBOY and talkin about somethin his HOMEBOY did all while we were on the phone) then he decides to call his HOMEBOY. "Oh, i'll call you right back baby ok?" was what he said. I knew at that moment he wasnt gonna call me back. And boy was I right. So now I see that he makes time for his HOMEBOYS but he doesnt think about his GIRLFRIEND until he has a little free time (probably when he's bored). Im so confused about why he doesnt make an effort to see me at school...we have NO classes together so why cant he just see me for about 30 seconds before or after class? I cant even get 30 seconds but his HOMEBOYS and ONLY GOD KNOWS WHO ELSE can get allllllll night. My philosophy is that he doesnt want people to know we are going out because he probably doesnt want his ex (lil girl) to know. Why? I dont know. It all boils down to the fact that he still misses her. He says he doesnt but his actions tell me something else. I also wonder if he's just with me because he doesnt want to be alone. People tell me that I should talk to him about it but I seriously dont feel like arguing with him. It is too early in the relationship to be arguing. So my thing is, should I just not call or txt him and not make AN EFFORT since he's not? Maybe he will realize that something is wrong. I REALLY NEED ADVICE. Please, if you all have read my LOOONNGGGG post, please respond if you can. Im really going crazy here trying to figure out what I should do. Comments anyone?