26 F experiencing her first Heartbreak

I actually cannot breathe. I thought we would have gotten married. I never cared about relationships or marriage but for some reason I fell in love with him and I fell so hard.

I have been having panic attacks all day and I want to throw up. All I want is for him to come back and say he doesn’t mean it.

I feel like trash he just threw out but I also miss him so much.

How long does this last because I feel like I’m dying. My chest hurts.

How do I get through this.