I recommend reading "How I Found Freedom in an Unfree World" by Harry Browne. Besides some statements on marriage it also discusses other issues like government, rights, morality, unselfishness, treadmill and emotions that can restrict your freedom. Here is what I copied myself on how to avoid the traps of marriage for later reading:

"Becoming Free of Marriage Problems

  1. Don’t think in terms of groups.
  2. Limit the relationship to what you have in common.
  3. Don't attempt to perpetuate a relationship by contract.

Each person should continue to have his time alone, his own friends, his own interests. The time spent together should be preserved for those things you enjoy together—so that every moment together is a joy rather than a burden.

You can build your relationships with each other in any way you choose. There is only one rule in a non-marriage: Don't ask either person to sacrifice his sovereignty

  1. Terminate the legal contract—so that you have a two-way relationship instead of a three-way contract with the government. That means getting a divorce—which is only a legal formality.

  2. Divide the property so that each thing is owned by one person or the other, thus recognizing individual sovereignty and removing the need for most joint decisions. Several ways to do this are described in Chapter 31.

  3. Do everything possible to make it easy for each of you to be totally honest with the other. That will be the hardest part but also the most rewarding. Self-interests can't be served if they can't be expressed. Once you're free to discuss everything openly and unashamedly, problems should be much more easily resolved.

Recognize that you don't have to do everything together. Each can pursue interests that are of no concern to the other. Think of yourselves as independent individuals who gain from being together in ways that are mutually satisfying."