Has this happened to yall?

Hey im writing here because I recently was talking to a friend and she responded with a confused text, something I wrote. Something about making someone spend 100k for some reason. Obviously I did not write that. I was wondering if you guys have gone through the same thing. Having your account text something you didnt. But the weirdest thing was that I couldn't see the message, only my friend could.

If anyone has gone through the same thing, has anything happened? Like, it was just the text and thats it? Did someone hack me?