If you want to save the marriage, then -
Stay calm and play your part of a wife even better. Make the home a comfortable place for him to come back to. Don't shout, don't cry, and don't moan. Try to be as much understanding as possible. Let him know that there is a wife waiting for him at home.
If you want to get a share of his money, then -
Gather as much evidence as possible and get a divorce him!
2) 愚人的做法
Shout at him - that will drive him away! He will feel better with the other woman!