Ex's wedding

my fiance took me to a wedding out of town and didn't tell me that the groom was an ex till we were already there, she later said they were friends for a long time after they dated but I still don't understand why she would do this, should I be ok with...

this?

It sounds to me like she doesn't see it as a big deal...and you shouldn't either. It's not like she ran off to his wedding alone, she brought you along. That is a shure sign that she cares about you and wants to show you off to her ex and wants to include you in her life. You should not be worried.

It would make me feel incomfortable, not telling me ahead of time - if it's innocent 'friends' now, there should have been no hesitation - called 'up front and honest'.

I've been through something similar and it wasn't nice of him to act as though nothing ever went on. I think it's dishonest and she gave you no chance to back out of going in the first place. I see it as a selfish act on her part. I'd be angry.