To remain silent to someone who was your friend sounds like you went against your friend. That's just my opinion. If you are a true friend, you would not support the person who hurt your friend. Sometimes you make hard choices but if you go against your friend then don't expect them to be there for you. They may remain cordial but it may not go further, depending on how much you've hurt them. I've been hurt by many former friends and my response comes from personal experience.

You may prefer to rely on the posts above if you're only looking for someone to agree with you.