How can I help my friend that's hurt?

Hi,

Okay, I still like my ex but not as much as before. I think it's starting to fade a bit too. I went to the same school as him since elementary. The point is, everytime my friends see him pass by or something, they would go to me  "COME ON! GO SAY HI OR SOMETHING! YOU CAN DO IT!" or something. One of my friends (who has also been with me since elementary) i think likes him too! She still bugs me about him and teases but i could sense she gets hurt. I have told my friends it is starting to fade. But they just like bothering me. 

My friend that i think likes him has been flirting a lot with him lately. Both of them in the hall giggling. =) i really think they would match. How can I get them to stop because i really think i don’t like him anymore. I hate seeing my friend pretend to be with us and to pretend she doesn’t like him. I can see how hurt she is. I want both of them to be happy. I would be happy too just to see them together. How can i help? I know i can’t force anything, it’s not in my hands to control everything. But i just want to lower the teasing.

Thanks