Am i wrong to ask my sister not to talk to my ex-best friend?

Yes. You and your ex friend are the one who are not talking, don't drag other people into the mess. That's just immature.

In the middle of the night

I go walking in my sleep

From the mountains of faith

To the river so deep

I must be lookin' for something

Something sacred i lost

But the river is wide

And it's too hard to cross

even though I know the river is wide

I walk down every evening and stand on the shore

I try to cross to the opposite side

So I can finally find what I've been looking for

In the middle of the night

I go walking in my sleep

Through the valley of fear

To a river so deep

I've been searching for something

Taken out of my soul

Something I'd never lose

Something somebody stole

I don't know why I go walking at night

But now I'm tired and I don't want to walk anymore

I hope it doesn't take the rest of my life

Until I find what it is I've been looking for

(Three beat Pause)

In the middle of the night

I go walking in my sleep

Through the jungle of doubt

To the river so deep

I know I'm searching for something

Something so undefined

That it can only be seen

By the eyes of the blind

In the middle of the night (break)

I’m not sure about a life after this

God knows I've never been a spiritual man

Baptized by the fire, I wade into the river

That is runnin' through the promised land (Long Five beat Pause)

In the middle of the night

I go walking in my sleep

Through the desert of truth

To the river so deep

We all end in the ocean

We all start in the streams

We're all carried along

By the river of dreams

In the middle of the night

the top of this query sounds egocentric on your section ("dropping your sister"), yet your sister might harm your ex much greater by mendacity and taking part in a sufferer, the friendship won't final that long, after which you will no longer might desire to rigidity approximately them being friends anymore.

well i think u should not do that because its ur sisters friend and well i dont really think that i need to explain this