I told my friend now she's mad at me....?

I told Stacii her soon to be husband was cheating with our "friend" Erika... Now Stacii is mad at me. Even though Erika announced it was true and now she's having his baby..What a mess.... I told them all to leave me alone and stay away from me..I could not take being in the middle any longer. Do you agree with me..? What would you have done?