I think you should meet him before you make any decisions. If she really didn't love her last husband it may not seem to her that she is rushing into anything, she probably was not really invested in the relationship and felt like it was over a long time before the actual divorce. YOu have a right to be upset because she took this man out of your life as well, but if she is really interested in a relationship with this new guy you shoudl at least give him a chance, you never know, he just might be a great guy. As for the wedding, meet him before and make a decision, that way if he does come there won't be that awkward first meeting feeling.