During the initial few sessions, it is the role of the therapist to identify how the couple responds to and adjusts when emotional intensity rises. Across different therapeutic approaches, this has been described in various ways (Christensen & Heavey, 1990; Johnson, 2004), but I refer to this as approach–approach, approach–withdraw, and withdraw–withdraw. These patterns describe how two people coordinate their responses to increasing emotional activation.

The central issue is not who is right or wrong. It is how the interaction stabilises. As intensity increases, couples tend to settle into a limited range of regulatory movements. Over time, these movements consolidate into a repeating structure. What begins as a way of managing discomfort becomes a fixed choreography. The pattern stops feeling like something the couple does and begins to define how the relationship functions.

Approach and withdrawal are not inherently problematic. They are basic regulatory movements. Approaching increases contact, engagement, and emotional pressure. Withdrawing reduces stimulation, distance, and demand. In a flexible system, both partners can move between these positions. They can engage and step back as needed. The difficulty emerges when this flexibility is lost and each partner becomes locked into a single, repeated response to intensity. When this happens, the regulatory function of both movements becomes polarised, and the relationship loses the ability to adjust.

In approach–approach patterns, both partners move toward contact as intensity increases. Emotional activation drives engagement rather than distance. Conversations accelerate, become louder, and extend in duration. Each partner attempts to be heard, clarify, or resolve the issue, but without any mechanism to reduce intensity. The interaction escalates through mutual involvement. There is no regulating function that slows the exchange. Momentum is conserved rather than resolved. Over time, this produces repetitive, high-intensity interactions in which the content may change, but the form remains the same.

In approach–withdraw patterns, intensity is organised asymmetrically. One partner moves toward engagement while the other reduces contact. The approaching partner increases pressure in an attempt to resolve, clarify, or reconnect. The withdrawing partner reduces involvement to manage overload, often through silence, delay, or disengagement. These movements are complementary and stabilise each other. Increased pursuit amplifies withdrawal, and increased withdrawal intensifies pursuit. The relationship becomes organised around this polarity. Roles consolidate, and each partner’s behaviour is experienced as the cause of the other’s response, rather than as part of a coordinated system.

In withdraw–withdraw patterns, both partners move away from contact when intensity rises. The interaction de-escalates quickly, often before issues are fully engaged. Conversations remain surface-level, difficult topics are avoided, and emotional expression is constrained. The relationship may appear stable or calm, but this stability is achieved through restriction rather than regulation. Over time, this pattern limits emotional depth and reduces opportunities for repair. The absence of overt conflict often masks the accumulation of distance.

Across all three patterns, the same organising principle applies. The pattern persists because it regulates intensity in a way the system can tolerate. It is functional in maintaining stability, even when the long-term effect is rigidity, disconnection, or escalation.

It is also important to be clear that none of these patterns are better. All three involve both individuals becoming entrenched in the same regulatory function and overall interactional pattern. In contrast, a healthy relationship is characterised by flexibility. Both partners are able, at different times, to increase or reduce intensity in constructive ways. Both can move between engagement and withdrawal as needed, rather than being fixed in one position.

For the therapist, these patterns provide an initial map of relational organisation. They indicate how intensity is distributed, where regulation breaks down, and how each partner contributes to the maintenance of the interaction. The task is not to categorise the couple rigidly, but to observe how these movements emerge in real time, how quickly they stabilise, and how little flexibility exists once the sequence begins.

These patterns also create the conditions in which specific behaviours occur. Corrosive actions do not arise in isolation. They are embedded within these interactional patterns. Without identifying the organising pattern, intervention remains focused on individual behaviours rather than on the structure that sustains them.

Recognising the pattern does not in itself create change. It provides orientation. It makes visible the choreography that would otherwise remain implicit. From there, intervention begins by interrupting the sequence, expanding the available range of responses, and restoring flexibility in how the couple manages emotional intensity.

In practice, this translates into different forms of intervention depending on how the pattern is organised. Where one partner withdraws, the work involves supporting greater presence, expression, and participation, while the therapist takes a more active role in containing and managing intensity in the room. Where one partner approaches, the task is to slow the pace, shape how expression occurs, and create space for response rather than continued escalation. In approach–approach patterns, intervention becomes more direct, with frequent interruption, deliberate slowing of the exchange, and tighter structuring of the interaction to prevent rapid escalation. In withdraw–withdraw patterns, the work involves increasing intensity in a controlled way, drawing both partners into the interaction while maintaining conditions that make engagement tolerable.

These three interactional patterns provide a broad, macro-level description of the relational organisation and the functioning of corrosive actions and other behaviours within it. They also make visible how each person’s behaviour is tightly interconnected and reciprocal, each move both a trigger and a response, and how intensity escalates as the cycle accelerates.