Hi there. The answer to your questions are - no don't bring it up before the wedding and yes just go on as if it never happened. You have said that you really do not have a relationship with your brother, that he doesn't know you, you never talk or even email so I would suggest keeping it that way since he obviously does not want to hear or acknowledge what you have to say. I am not sure of the age difference between you but it is possible that his memories are quite different to yours or he has chosen the denial approach in order to deal with it. Regardless of the reasons I think it would be wise not to go down that road with him as it will achieve nothing other than anger and frustrate you. All the best x