7 days ago my ex told me she had no feelings for me and dumped me.

Tonight I was throwing a party, and one of my friends told me she wanted to come so I told her to tell her not to. A minute later my ex messages me saying:

Her: I'm actually not invited?

Me: I said some distance between us, no?

Her: But I just want us to be friends

Her: Kidding btw about friendship ^ (I specifically told her 20 times we can't remain friends if she dumps me)

Me; I have enough friends and I said some distance, see you later

Her: But there's always room in your heart for me

I read the last message and didn't reply.

Is it worth getting back with this girl and is she just fishing for validation or not? How should I play this if I want her to be obsessed with me?