I got into my dream schools why do I feel like this?

I recently got accepted to UCLA, UCBerkley, Stanford, Smith, and Wellesly but I just don't know most my friends that wanted to go to UCLA or Berkley didn't get accepted and I feel like I would be putting salt in the wound if I were to tell them oh yeah I'm really sorry you didn't get in but I found out I got accepted. I was even shocked I was able to get accepted into these schools, but I don't know why I'm not happier maybe the shock is still settling in but should I tell my friends? And should I not be happier?