a tragic love (maybe not) story

What will you do when the person you thought you loved and who loved you walk away from you during the hardest time of your life?
Your whole world falls apart not only because of him but because of all the things that's happening in your life right now.
You just announced your relationship to all your friends and all your friends cannot wait to meet him and he just walked away like that? 
Everyone will say "You're so dumb!" "Why would you trust him in a very short time?!" 
Let me just say that we were tgt for three months before I really decided to tell it to everyone. I was happy with him. Like really happy. I felt like finally I found someone who was patient to me, nice to me and caring and he taught me a lot of stuffs. He was my punching bag whenever something comes up. 
BUT I was too childish. I'm trying to work on it but I can't help myself. See, I'm a very very sensitive person. As I liked him more and more, I needed more security. So, I started testing him until a normal couln't stand it. I know, I was too childish. I was blinded. I couldn't think of anything else. 
He treated me like a princess. He treated me right. He was perfect for me and I thought I was perfect for him. I keep thinking while this is all over, I'll go back to normal me and stop testing him. So, I thought he could never leave me.
I WAS WRONG.
Well, you can say "If he's the one, he'll never leave." BUT if the other party is too childish and immature like me, every single guy will run the hell away from me. 
I got mad at stuffs that usually doesn't matter to me. I cried at every little mistake he made. I got mad when he replies me after 5 minutes. I got mad when he replies me 2 seconds later. I was a total jerk. but he put up with me, made me felt like I'm the best.
Now it's easier to see why It's so hard for me now to get over him, right? I was ready to make a change and boom, he left me.
I deactivated my facebook cos I couldn't bare to delete our photos or even look at our photos. I got reminded of how he was perfect and I blew it. 
All the happy memories. I played and replayed them in my mind and two minutes later, I'll find myself crying unable to sleep. I couldn't sleep for 3 days. Couldn't eat and couldn't sleep. I vomited everything I ate and I just can't go to sleep. I'll wake up in the middle of the night and will think of calling him but I could never do it. Then, suddenly, I'll cry myself to sleep or not to sleep. 
When he left me, he didn't say any reason why. I reflect on myself for the first two nights. What did I do wrong? What's the one big mistake that is so big that he left me? Actually it's nothing, it's just the accumulation of all the childish acts I did. He snaps and decided to leave me. Or was he just a good liar that pretended to like me just because he was bored? If so, he's a very good liar. 
It's just very hard to accept that he's not here anymore because he treated me like no other and I didn't get a chance to treat him the same way. I took him for granted. I was the bitch. Now that he's gone, I miss him so much. I couldn't eat a proper meal for 3ays already had 5 hours of sleep in 3days. Most of the time, I'll be crying and talking to my best friend. 
My friends tried to cheer me up but they all gave up. Nonetheless, they're still there for me but they couldn't do anything. Did I mention that I lost a very good bro to him as well? 
I remember I wrote a "Dealing with Breakups" post a while ago. I wish it was that easy. Now, I felt like I didn't know any better during that time. All I know was I wanted to have fun with all the fun new people.
Now, the kinda relationship I want is simple. We'll go shopping together, go watching movies, try new foods, new games, new places together. I'll tell him about my day and listen him talking about his. We'll sometimes cook for each other, give each other massages, cuddle and watch movie together. because our aspects in life are almost the same, we'll laugh about other people who don't have the same view as us. Go to the beach together, gym together and talk about how other people are fat and unhealthy. 
But now, he's having so much fun with his life now. I'm just sad... alone. I don't know how long will it take to completely recover from this. It kinda hurts to see that one person who claimed who loved you is having the time of his life without you. 
From every single relationship I had, I learned at least one lesson. I felt like I became a better person after each relationship. I wish I'm a heartless person. I wish I never existed. My mom wished I never existed. So yeah, all the important people in my life left me. 
I left my dad once but he never gave up on me. That's the only thing which keeps me from killing myself. Although we barely talk, he told me he'd try his best to do everything he can for me tho I left him and blamed him for breaking our family apart. At the end of the day, he was the only one who still wants me and makes me feel needed. I'm grateful for that. All my life, family always came second. "I" always came first because I'm that selfish. My dad proved me I was wrong. 
I hope I'll be happier tomorrow.