Should I confront my fiance over text messages I found?

[AustinChief]

Originally Posted by Brock

If I'm aware of somebody talking shit about my family whether in confidence or not, I'm done with them. YMMV.

Pretty much this.

In this case, we are missing a ton of context and the exact wording... but if it was truly vicious and mean spirited... that's just not the kind of person I would be comfortable spending my life with. But again, without knowing more, you may be blowing things out of proportion and interpreting it to be far worse than it really is. If your assessment IS correct though, she doesn't sound like a very nice person and if it were me I'd start working on an exit strategy.