It depends on what you want.
If you are looking for a relationship it's best to wait at until you're comfortable with each other and have a better picture of what each person wants in the relationship.
Is there mutual trust and respect, common goals, a compatible life plan?
You need to find out if you are 'on the same page' with regard to finances, work, children, how many children, how they will be spaced and other attitudes.
If you are considering a Catholic Marriage. The Church operates a “Pre-Cana” so you will prepare for the Sacrament of Marriage. You and your future spouse will have the opportunity to discuss many important topics, including Family of Origin, Spirituality of Marriage, Money Matters, Conflict Resolution, Intimacy and Sexuality, Theology of Marriage, and more.