Help with my situation asap before i become anymore irate !!!!?

Do not get married...he isn't ready and you are not either. You already have been settling with things. Don't settle for unhappiness. Go ahead and let him know that you found out. Call off the wedding and file papers for child support and get your life together. It is about you and the kids now. Don't waste your time on revenge, you will end up in court for nonsense.