Forgive him as you don't have enough evidence to nail him. Move on as all you have said show he is not your husband to be. For him to do this while still courting he will do it again and again even when you are marred. And it may even be difficult to trust him with other women. Pray for God's forgiveness and move on.

This guy should at least keep quiet and preach the gospel now. You ran away from Nigeria and you are throwing bombs at every dick and harry