Is it wrong that I'm upset with my wife for going to a friends house?
Why do you not like the friend?
I dislike his family, because they are very pretentious.
You do not have to like all people. It is ok to have a dislike for someone else.
I don't mind it, but I told her not to talk to that guy and make a move on him.
It's fine to not get along with everyone. You cannot like and agree with everyone. Just be sure that you respect your wife's wishes to have that friend in her life.