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2. What are three important things to do before marriage?

(I think going to a marriage counsellor before you get married would be an excellent idea.) Learn how to laugh together.....learn how to laugh together...and finally...learn to laugh together.
Pre-Marital counseling, get them mad so you know what that looks like, some say live with them...(which might not be a bad idea these days, that way you know what you are getting yourself into)
Discuss what you want from the marriage, as well as goals and the importance of children.
Have your own credit rating
Target practice
An escape plan
Rent six horrendous children for a weekend for the two of you and see who does most of the care and how
Discuss financial matters, sexual expectations, child rearing practices, how much time you will spend with in-laws, if there is any porn addiction
Get a prenup