Blocking question

So basically me and my "ex" gf were on a LDR for about a year (+1 year irl).

So basically at the end we agreed on not texting and seeing where it could go again in ONE YEAR when ill go back to where she lives again.

The problem is, i am in this limbo where she started moving on months before wanting it to end.

My dumbass saw the signs but wasn't strong enough to let her go. She even once sent the lyrics of a song called "not strong enough by Apocaluptica". The lyrics LITTERALLY said :

I'm not strong enough to stay away.

Can't run from you.

I just run back to you.

Like a moth I'm drawn into your flame.

Say my name,

But it's not the same.

You look in my eyes.

I'm stripped of my pride.

And my soul surrenders,

And you bring my heart to its knees.

And it's killin' me when you're away.

I wanna leave and I wanna stay.

And I'm so confused,

So hard to choose

Between the pleasure and the pain.

And I know it's wrong, and I know it's right.

Even if I try to win the fight,

My heart would overrule my mind.

And I'm not strong enough to stay away.

So my retarded ass saw that as.... ahhh how cute. Instead of, boyyyyy the breakup is coming. So I stayed attached. And basically I was the one keeping the relationship alive for the last month

Anyways, we agreed on seeing where it could go when ill go back instead of a hard no. But she basically doesn't initiate, and Im the only one reaching out EVERY TIME. She answers, she even picks up calls, but she dont wanna talk ans stick to the "we agreed on not talking". We still have eachother on social media so I can still see if she adds someone and that shit is killing me.

We are basically single, but in Im not ok yet to see her with another guy if she doesnt find another guy. She keeps telling me shes not looking for another guy and shes still single, but we sre still basically single

So anyways, she told me blocking would be immature. But this is making me go insane

I wanted to tell her something like. "Hey nothing personal. Bur i just dont see this going anywhere so im blocking you. Good luck

The problem is ive already blocked her before 3 times and she told me "if you block me again, its over for good".

She also refuses friendship, bc she told me "if you want to be friends, hard pass on you bc i dont want just friends and ive already told you i cant be just friends with you. So we sre nothing"

Wtf do i do?