Permalinks Problem

Okay, so I am trying to make a post in my “Interviews” category.

The link was; https://www.happy-ever-after.org/interviews/11/2014/jaymin-eve/

But I changed the last part to just ‘jaymineve’ so it would be this;

https://www.happy-ever-after.org/interviews/11/2014/jaymineve/

Except, every time I try that, it changes it to;

https://www.happy-ever-after.org/interviews/11/2014/jaymineve-2/

instead…. now, I DO have another post called ‘jaymineve’ but its under a DIFFERENT category and I was under the impression that as long as we had categories in our permalinks, that we could have more than one post or page called the same thing?

If so, then why is it doing this?

In case it matters, the other post with ‘jaymineve’ is;

https://www.happy-ever-after.org/in-the-spotlight/11/2014/jaymineve/

So yes, the same year and month but I thought it was the categories that mattered.

Thanks for your time!