Enneagram Type One (the Reformer)
Enneagram Type Five (the Investigator)

What Each Type Brings to the Relationship

Enneagram Ones and Fives are alike in many ways, particularly in their reticence to show their emotions directly and in their identification with their minds. Both see themselves as fact-oriented, although Fives are more purely mental while Ones like their ideas and philosophies to have practical ramifications. Both bring to their relationship a desire to be objective; they both want to avoid falling into sentimentality, or to allow their feelings to cloud their mental clarity. Ones and Fives share a rich mental life of intellectual stimulation, curiosity, and a multiplicity of mutual interests—from the opera to sports to politics to economics to history, and so forth. Ones and Fives often enjoy each other’s company and intellectual stimulation, loving to debate and admiring the intelligence and expertise exhibited by the other. Unexpectedly, they tickle each other’s funny bone—this pair loves to laugh together at life’s absurdities. Child rearing, traveling, building a house, shared hobbies, or other complex activities are mutually stimulating and bonding for them.

They both are highly respectful of personal boundaries, rarely being the one to make the first move in anything regarding intimacy unless they have pretty strong signals from the other that they would be welcomed. Thus, Ones and Fives tend to bring a certain formality and courtesy to each other that can be charmingly courtly and old-fashioned. Ones add to this a concern with logic and order, with systematic thinking, attention to details and the desire to improve the world around them. Fives bring curiosity, the willingness to be intellectually (and sexually) adventuresome, a taste for the bizarre and illogical, and the ability to relish disorder, chaos, and lack of apparent meaning. There is quiet affectionate appreciation in this pairing. If romance develops, it develops slowly but deeply.

Potential Trouble Spots or Issues

As intellectual as both types tend to be, they are also opposites in important areas, and this can lead to conflicts and the eventual breakdown of their relationship. Most seriously, Ones tend to believe in the objectivity of certain truths and believe that once these are known, there is the possibility of arriving at objective certitude. Ones feel that their ideals and philosophy have given them contact with some form of ultimate Truth, and therefore they are living from a viewpoint in which acquiring certainty is a moral imperative. Fives, on the other hand, feel that there is no such thing as objective truth, merely possible interpretations for what seems to be objective reality. We may come to some degree of consensus, but that does not necessarily mean that our consensus reflects anything completely objective. It just means that we choose to think the same way. Fives are thus skeptics and debunkers of certitude. They love to debate and deflate ironclad philosophies and self-righteously held positions wherever they find them. Thus, less healthy Ones can drift into various forms of fundamentalism, believing that they hold the key to truth, while Fives can become provocative nihilists, believing that there is no truth.

In a relationship, both types find it very difficult to change their basic philosophies of life—and they both find it difficult to respect anyone who believes the opposite of them. Yet both can respect the other’s boundaries to a fault, not wanting to impose their own beliefs on the other. The relationship can thus become cool and distant, impersonal and analytic, tinged with resignation and cynicism. Ones can feel that Fives are too impractical and endlessly concerned with irrelevancies; Fives can feel that Ones are too serious and rigid and that they take their opinions far too seriously. Both can become too self-contained, evolving their lives in separate spheres-perhaps only getting together for occasional meals, to sleep, or to solve pressing problems. Coldness and isolation take over and may last for years, without either of them realizing it very clearly much less feeling that either of them can do very much about it.

For further understanding about this type combination, read more about the Stress Arrow and how types One and Five behave when they are moving along it.