But ... if she still has feelings for him ... it's not gonna necessarily gonna turn out to be a 'fun' trip for her.

She already said that she 'recently' broke up with him and that she swore to her father (was it?) that she would not get involved with him again and .. she said 'he ruined her life'.
Umm now that tells me a lot.
When I have been in that situation (well, sorry but no one has ever 'ruined my life' for goodness sakes but she sound YOUNG to say such a thing) and someone invited be over for a party (much less a vacation) where he might show .. I declined because I KNEW I still cared for him. She doesn't have to make a big deal out of it and tell folks everything .. just be BUSY and not able to make the trip. Maybe in a year or so ... things will be different.

Hey, it's
cutting 
to see someone you like having fun with possibly other women

and it's gonna be hardddd to travel with and spend what ...a week or so in Mexico with this tight group of friends trying avoid him. Wow.
It will make everyone .. uncomfortable because they will see that you are trying too hard to pretend you don't care and just want to have fun.
We are only human - what's wrong with admitting to yourself that you need distance .. for a while?That's all I am saying.
Sure she can put on a brave face to us and say she no longer cares for him .. but only SHE knows what really happening inside and I think if she did not care about that ex ...she wouldn't even be writing to us to tell the truth.

Edited by Printer_Ink - Mar 12 2013 at 6:16am