<human>: She said she would definitely love to go with her friend. " It seems fun." " Petrient would have a fit." " Sounds like an adventure if only to make fun of it." Loads of laughter about it after, kind of teasing about it. 

She ended up not telling me about it or even going to it this past weekend. On the day they had planned, she asked me to go to dinner with her and out for drinks, which we did. 

I keep trying to find a way to talk to her about it. Her facebook account stays logged on our TV so I don't think she meant to hide it. I went to close out a tab and it was there. And she has told her friends she would go to things before that she never really intended to go to. 

I am kind of upset she would even say she would go even if she didn't actually plan to go but I mostly want to know if she actually wanted to go and decided not to because I'd be upset or if she intended to go but decided against it because she didn't really want to go, or if she never intended to go in the first place. I also want to ask her why she never mentioned it? 

How do I broach this topic with her? Do I even mention it? Do I let it go? 

I should note that she is super nice and generally is use to saying yes to most things regarding activities even if she doesn't want to do them.

Can you give me the gist of the text in a nutshell?
<bot>: I want to know why my fiance didn't mention saying she would love to go to this with her friend to me and whether she actually intended to go or if she was just being nice. It is eating me alive, honestly.