OK so I'm a junior in high school and I've been dating the same guy since 8th grade. It's been four years and we were great. When he first pursued me in 8th grade I really wanted nothing to do with him (typical 13 year old girl) but I decided to date him anyway. I dumped him 3 months later for a guy that I had liked for a long time before him. The guy I dumped was so heartbroken he missed 72 days of school (freshman) because he couldn't be anywhere I was w/out breaking down. After he learned to start dating again it was the summer of my freshman year (his sophmore) and he was talking to an older girl. I was over the guy I dumped him for and realized that I really did like him & wanted to try again. So I started pursuing him, but he held a lot of anger towards me for dumping him. He wouldn't even talk to me.. That whole summer I tried so hard & he wouldn't give me the time of day. It killed me. When school started, the olde rguys would flirt with me & stuff and I was sort of done trying to get him back, and he din't like that so he gave in and one night came to my house and told me how he still cared a lot and he was lying to himself because he wanted me to hurt like he did for so long. Well we got back together. We've been together ever since. And yea here & there we would take so called "breaks" and it was usually my idea. But then my feelings got really strong for him my sophomore (his junior) year. And I realized I was in love with him. He was so perfect for me and to me. Now he's a senior and for the last 9-10 months, we've been fighting a lot. (Mind you his moms been divoreced 2 times and he hads never been around a good relationship) He delt with stuff so wrong and was so stubborn because he didn't know any better. We both were jealous of one another haging out with other people. And that was a big part of our fughts. I see that now. Here I am, head over heels for hom though,a and I'm willing to do w/e it takes to make syuff work & I thought he was too since he tried so hard to get me back, but I realized I was all wrong. 2 months ago, he broke up with me. He said it was because he hasn't had any of his high school career to flirt around with other people or just be with his friends all the time or anything, and I felt the same way so I agreed and we broke up. But 2 days after we broke up he stared talking to a girl a year younger than me. And they've been inseparable since. They're now a couple and have been since about 2 weeks after we ended. I never had sex with him because I want to save myself, and so did he so he was OK with it. But I found out he gave his virginity to this girl now... and she is very "expirienced". On top of doing all this to me, he can't even look at me and acts like he hates me. My parents and elders tell me its because he feels guilty about how he's delt with this. And that he will realize the mistake he's made and come back. Because he will always love me. It really was love and I won't let anyone tell me different. But they say it might take anpther week or 2 more years but he will be back I want me back. Do you think he will?? Please help me out here, this is killing me... :(

Right.. I'm going to tell you the raw truth though you probably don't want to hear it.. But seeing as though the age you're in is quite tender when it comes to these things.. If he was with you for so long and he wasn't getting sex(irrelevant of whether he claims he didn't mind) - and he's getting sex now, chances are you're the last thing on his mind atm... I'm sorry :/
Credit to you for having morals and saving yourself, this doesn't mean you should change for ANYONE. All I'm saying is that going back to when I was that age, I was in a similar situation where I was with a girl for a really long time and I thought I loved her.. Then I got into a "sexual relationship" which was my first relationship where I was getting sex on an almost daily basis and I thought "wow this is love, I love this girl".It's quite easy to be confused when you're a kid and you're "getting some".
One day he may realize his mistake but it shouldn't be what is on your mind.. What you need to focus on is yourself.. You can't wait around for him to come back if he ever does.. You need to start forgetting him and start moving on with your life.. Youre still young and you will have to go through this several times in your lifetime - we all do.
Chin up.

And that he will realize the mistake he's made and come back.

That's so much BS! You both will change and grow, and he may come back or may not. No one can know that! Don't waste time waiting for a maybe. Start loving yourself more than you love the idea of him. he didn't wait for you did he? Don't wait on him, why would you put your life on hold, for someone who has a lot of growing, and learning, to do also?