Sixteen, my god that seems like a lifetime ago.
First of all, girl you are not fat. What I would give to have that body again now. Be proud of what you've got. You might not see it now, but one day you'll have a daughter who looks just like you and you'll see how beautiful she is, which will reflect just a tad bit back to you.. I can't stress this enough. You are you, be happy with who you are.
This is The year. You'll meet HIM. Meet him and fall madly in love. You've got a lot of tears coming this year, try not to let it bother you so much. It's hard to believe but give it a year- year & half and he will pick you. Don't let his initial rejection kill you this time.
You know this, but quit trusting Mouth. She always pretends to be friendly and ALWAYS goes after anyone you show the slightest interest in. Yes, he'll date her. No, he won't sleep with her (or at least that's what he says). He won't stay with her long. In the end, he's yours and always will be. Just be patient, when you finally give up and accept just being friends- that's when he'll look at you differently. I can't explain it, it's just how it happens.
Next year, oh do I have advice for you.. But that will have to wait.
Hugs from the other side,