The five stages of a relationship are the Merge, Doubt and Denial, Disillusionment, the Decision, and Wholehearted Love. Every single relationship moves through these five stages—though not only once.

Do couples go through a fighting phase?

As simple as that sounds, actually getting through the Power Struggle stage is a bumpy ride for most couples. Its all too easy for one partner to quit halfway along the journey and end the relationship because it feels like too much hard work.

How many stages are in a relationship?

According to his relationship model, relationships typically go through five stages as they develop. Of course, not every relationship follows this exact path. This model can offer a useful way to think about how relationships progress and the pitfalls that can pop up along the way.