A friend's role

I've made a mistake.
When someone's totally excited or frustrated, they finally can't take it and they ask, or talk to their friends' for opinion. Friends' suggestions are extremely important. They make the final decisions, easily.

If you ate a bite of a cake that tastes so god damn awesome, will you continue to eat it if your friends said it's gross and disgusting?
No, because you're not frustrated and you're clear about yourself, about how you feel towards the cake.
The problem now is that your taste buds are infected. Or maybe your friends tell you this cake is fucking expired, or it's inner layer is rotting. You throw it away without hesitation. Am I right?
The truth is, the cake is not harmful to you, sweetheart. The cake is fucking organic and it's good to you. It wants to be good to you. It wants to be inside you forever. I can never want to hurt you.

A friend's role.
Partly, they destroyed 'us'. My friend told me to talk to your friends to try to solve 'our' problem, but, I know it's not gonna work because their suggestions are what brought 'us' here.
I'm a shitty friend. Everything was well and fine. It's an accident we gossiped. It's an accident I found out a secret which IS a secret from her perspective. I know it'll make her feel shitty, but I think she should know.
When someone's exposing secrets behind your back, OF COURSE you should know it so you won't tell them anymore. Yes it's about helping her to protect herself.

But I didn't mean to break the bond between you two.

As a friend, you want the best for your buddy. You wanna give suggestions that help the most in her life. You want to tell her, she was right to not trust him, but you don't wanna destroy that relationship, right? How do you do that?
I still regret for making this move.

At the same time, I hate your friends but I don't really blame them for giving suggestions. I hate them for suggesting a breakup. But, I don't hate them for wanting the best for you. We all love you  and care about you, that's why, your friends and I and your family have the same motives: to hope the best for you.

It's actually not wrong to listen either one of them's suggestion. Even though you listen to one, and you hurt another so badly she doesn't wanna live anymore. Even if you listen to her and give a chance. It's no harm.
It's just they thought the cake is harmful, but it actually isn't. And you're throwing it away, because it's the safest way to prevent yourself getting poisoned.

Friends' role are so important. Do not, simply give suggestions.