What do you think about me continuing to message my ex even though she doesn't reply?
I think you should make better use of your time.
But I miss her and still care about her.
If she's your ex you should leave her alone. If she isn't responding, she's trying to tell you something.
But she's the one I like and I want her to have desire to talk to me.
It's time to move on. Her silence is her response. You're wasting time you could be investing in a new relationship; time has a way of healing emotional pain.