Why A Lot Of Marriages Could Use A 'Third' — And What That Even Means

Good marriages require more than trust, honesty, and hard work.

Marriage with a third Jacob Lund | Canva
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I was 29 years old and taking part in a three-day theater workshop. With me was a beautiful, married Italian theater teacher 20 years older than me. 

As a single looking for love in all the wrong places, I tried to woo her. For three whole days, I flirted and tried to seduce her. It didn’t work. As the workshop came to a close, she turned to me and said: “You’re a wonderful man. I could easily fall in love with you. But I am married. I fall in love twice a week and take all that energy and channel it into my marriage.”

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She said goodbye, walked away, and I never saw her again. Twenty years later, I now understand what she meant. She was harnessing the power of The Third in her relationship.

A lot of marriages could use a third — but what does that mean?

It is an illusion to expect our partner to fill all of our needs, fantasies, and desires. We all yearn to find our soul mate, the one, but even then, they always fall short. One single person can’t possibly fill and meet all our needs all the time.

You have to be happy on your own first. Research tells us this looks like having deep social connections, and expressing gratitude, and engaging in random acts of kindness.

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We have three options for dealing with our partners' shortcomings:

  1. Give up on those unmet needs. Giving up on our needs over time leads to resentment, bitterness, numbness, or boredom.
  2. Force our partner to fill those needs. Force them to take us out to that Michelin restaurant and hear them complain about the prices. Or roll their eyes as you go on and on about why the bass track of Taxman is legendary.
  3. Outsource. Fulfilling needs and desires elsewhere. Find a (secret) someone with whom to fill those needs. A special friend, a friendly stranger, a bored neighbor, a flirty colleague….

RELATED: I Had An Affair — And It Completely Saved My Marriage

That someone (or something) who is not our partner is called The Third.

The Third is any person or thing we desire that lies outside of the dyad. The obvious third could be a person, a lover. But it could also be your job, money, a marathon, hobby, art collection, or even your children.

An affair may lead to a happier marriage, research shows us.

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Family therapist Carl Whitaker notably stated that the most common “affair” is that of a mother with her children — an affair in this case means displacing your libido (your life force) outside of your partnership. 

Under that definition, we all have multiple affairs all the time. Much is written about intimate and romantic affairs. 

But there are many other types of Thirds.

Is The Third always bad?

The short answer is no. Losing yourself to a Third can lead to betrayal and potentially crossing the boundaries of your bond, thereby hurting (and possibly ending) your relationship. But cultivating a healthy and open relationship with The Third also has the potential to breathe new life into long-term committed relationships

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It helps us feel seen, special, wanted, and energized. It allows our partner to seem less taken for granted, and therefore more desirable to us.

You can use The Third in a generative way (much like that theater teacher showed me 20 years ago) or in a destructive way; it is up to you. The presence of The Third is a fact of life; how we deal with it is up to us,” says family therapist Ester Perel.

RELATED: 16 Tiny Ways Honest Communication Will Solve All Your Problems

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How to incorporate The Third generatively:

The short answer is it takes transparency, trust, play, and hard work.

1. Invest in your partner

Fill your partner’s love tank, and make sure they feel seen, heard, appreciated, and loved. Go towards their emotional bids. Make sure they feel confident in your love and commitment to them. 

This will ensure that you both are in love surplus and reduce feelings of insecurity and jealousy. Having such a strong base will help you integrate Thirds easily.

2. Identify your current Thirds

Reflect on and identify where your libido, excitement, and vitality are currently directed. Remember, these features have intensities that can be modulated, just like a volume dial on your stereo — sometimes they're higher and sometimes lower. 

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Share your findings playfully with your partner. As Perel reminds us: “Couples who feel free to talk honestly about their desires, even when they are not directed at each other, paradoxically become closer.”

RELATED: 10 Things You Subconsciously Do As A Couple That Keep You From Being Happy

3. Communicate with the Third

As you both slowly find Thirds to fill your identified needs (a book club, a therapist, a trusted friend who loves to talk about art), share them proactively with your partner. Don’t wait for them to ask about possible Thirds. Such updates build trust, a crucial component when integrating The Third in your relationship.

Couple communicating the third DimaBerlin | Shutterstock

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4. Enjoy the Third. 

When you are prioritizing your CrossFit class over your partner or going with your friends to that concert instead of date night, enjoy yourself. Just like that theater teacher told me: Fall in Love. 

Remember that you’re not falling in love with something or someone else; you’re falling in love with a part of yourself. You are bringing to life a part of you that revitalizes your world. The more parts of yourself you express and experience, the richer and more fulfilling life you’ll have.

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5. Blast it back to your relationship

Take all the excitement, vitality, joy, play, exuberance, and energy you get from The Third, and channel it right back into your relationship. Return home with love, gratitude, and appreciation for your partner with renewed vigor. Show them that embracing The Third is a win-win for both of you.

You can’t control what or who your heart desires. You can control how you will act on those desires. Instead of fearing it, lean into it. It might seem counter-intuitive, but embracing The Third openly and lovingly is one of the best ways to maintain a deep, vital, growing relationship.

RELATED: 6 Specific Ways To Practice The One Thing That Will Bring Next-Level Love To Your Relationship

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Assael Romanelli, Ph.D., is a clinical social worker, licensed Couple & Family Therapist, and an international trainer. He is the founder and co-director of The Potential State For Enriching Relationships