Should I kill myself?

Im not sure weather is should kill myself or not. I'm 13 too, and trust me, I've been through a lot. This year is my 8th grade year, right before high school, and already things are falling apart. I just don't see a reason for me to live. I used to get straight A's and make many of my friends laugh, but I'm not so great with girls. This year i cant seem to think straight, im always angry and don't want to talk to people, I feel like im getting picked on, and I can't get my work in on time, hence bringing my grades down. Right now I have a B- in science. That's the worst grade I have ever had. There is also this insanely beautiful girl named Devon whom I am MADLY in love with, and I know for a fact she does not like me. My best friend is in love with her too, and he is like schools mr. awesomeness. I don't mean this in a gay perspective but everyone loves him. He is funny, handsome, athletic, and so many things I could compliment him on. I'm not athletic, and ive gained so much weight and cant seem to loose it. I'm on the verge of killing myself this instant. All my friends think im still funny, but i don't want to make a fool of myself in front of Devon. I'm like addicted to video games now, and im a pro gamer. i could get paid if I wanted to, but then I will have completely lost my life. I've talked to my friends and the teachers and counselor. They think that one girl is absolutely no reason to commit suicide, but I don't think they understand how much She means to me. I don't really know what I have to live for, and my parents stink. They both are at work 24/7 and my dad never does anything with me. For some reason, my mom never hangs out with me anymore either. My dad will give me money to spend, and he thinks that that is enough to make me happy. My "friends" never want to hang out either. One of them likes to play sports like crazy, and like I said, I just cannot keep up with that. Nobody is into cars like I am. Nobody likes to do anything that I do, they all have friends to hang with, and girlfriends and people who really care about them. It hurts me to know I can't even come home to a loving family anymore. Ever since my little brother who is now 8 was born, everyone thinks he is funny, and they pay more attention to him. Everyday is more painful than the last when i go to school, knowing I can't keep up the grades, cant get a girlfriend, and cant hold onto a relationship. I also don't even want to come home even after a long hard day at school because the first thing I do is some how convince myself to sit on my but and play games. Then, as soon as my parents get home its " Do this, Then that when your done, And do this after-wards" while my little brother gets to enjoy himself. The only person who I THINK might care about me is my older brother, who has a nice car, but his life is falling apart too. He Just recently got a divorce, and his wife gets his 2 daughter 11months out of the year. He can't get a job, and cant pay off his car. I just can not find any reason what so ever to live. No matter what I do, I am never happy. So please answer my question sincerely, Should I kill myself and make everyone happy finally?