I think Liara has a point.
I would imagine the reason you got that response was because he/they didn't know what to say?
NEVER tell anyone anything that is really important in a text message, it's not appropriate and it puts the person you are communicating with in an awkward position.
TBH, I would say, meet me tomorrow we talk about it then or some such.
If you need to tell someone something important you do it face to face. Period.
Sorry.