Bit of exaggeration there - I'm sure they don't literally talk all day and night! But I guess it's the same when you have a best friend, you just talk nonsense to them, then the same nonsense over and over again.
If you don't mind me saying, you sound quite bitter in your posts. "The girl I like doesn't want me", "girls go for men who treat them badly", "I don't understand what people talk about etc" Natural and understandable (and I did exactly the same as you when I was your age) but one thing you should do for the sake of your own sanity is let others be and concentrate on your own happiness. You have to create opportunities to let yourself be happy.
Let go of the negativity, as comforting as it is. You are currently in a position of fear, and that fear is causing you to lash out at the world rather than be a part of it. There's lots of posts on here of people doing exactly the same thing - and those people are still single into their twenties, thirties and forties. I've read one post where a gentleman has said he will "not be here in 3-4 years time" unless he finds love. What kind of message does that send out to potential partners?! You won't find love by lashing out at others who have it. Love comes naturally when you show love, to yourself and those around you. Not posting on a forum but actually making a change to your life, no matter how small.
There's a famous book called Feel the Fear and Do It Anyway by Susan Jeffers. There is a whole chapter about moving from a position of pain (where you are now) to a position of power where you are more confident and happy. I highly recommend you read it.
Do you know how I turned my life around when I was your age? I nearly died. I had a massive brain haemorrhage that left me disabled, paralysed and unable to speak. That fear, that terror, that anger of not being able to move or communicate completely swung the compass of my life. I became determined to live my life with as much gusto as I could, so instead of leaving school with my average grades into an average job, I stayed on at school and did a qualification I was not really into (health and social care). But while I didn't really use the qualification for anything except getting me into college, I met a couple of people who are still friends to this day. The sister of one is now my best best friend and I will know her until I die. From then on I got a job where I met more people, graduated from college and ended up travelling the world. When I got back I signed up to an online dating agency and met several girls, one of whom is now my wife. I've written two books, travelled more, got my dream job and try and help other people the best I can. I let go of all the negativity (although I still feel it sometimes) and put all my energy into loving what I do.
I'm nobody special; I'm not handsome or talented, or rich or confident, but I don't let that hold me back from doing what I love doing. This is what you need to do to.
I believe in you dude, I know you can do it. You just need to trust that you can.