I'm a mess

There just isn't anyone who i'm not going to miss, even if they're still staying on at Lutterworth I won't be in the same classes with them, and we'll grow apart, and it'll go from a casual 'Hi' when passing in the corridor, to a smile, to nothing, and that past two years of being friends with people would've been pointless, and that's what gets me upset. :(
Having Science last lesson was always going to have me in tears, and it was just standing there talking to everyone and thinking how two years ago, none of us were friends and now? We were like one big family, but that's all over now, I can't even say how much i'm going to miss not seeing them all everyday.
Oh god Re, Tom and Molly, i'm going to miss them two! We've had such a good past 2 years, and me and Tom went through a bit, and Molly is one of my best friends now, I just can't, omg, please everyone, lets keep in touch please, ok? Ok.
I was thinking, like why do you cry when you're sad, and laugh when you're happy? What makes you do that? It would be weird if you cried when you were happy, and laughed when you were sad, and laughing was some like highly embarrassing thing that no one ever did, and when you did it people were like 'OMG YOU'RE LAUGHING.' lol, just thinking