The answer to getting married is 'no'. And you holding on to the close friendship with the ex is going to be a problem for any SO. My husband wouldn't have put up with that for a minute and neither would I. You need to find a very special person who will say that it's just great that you are such great friends with your ex. It is too threatening and bothersome a scenario for most people. If you want to fully love someone new you must let go of the close friendship with the exes.