Boy are guys stupid...

I have been heartbroken by him to long now. Let me explian it to you...
We have known each other since birth and last year when he met my 'friend' I thought nothing of it. So this year they start to like each other and now have gone out for like two days and they are already saying 'I love you.' It is discusting! Please someone tell me am I overreacting? It's just I have known him my whole life and it hurts me... help. I really don't mean to bother anyone it's just only a few weeks ago he acted as if he liked me, and now I am just confused and about to cry. Plus guys have never really liked me and well guys just don't like a chubby red-headed hyper girl... :(