Max and Andi have just bought a car as a couple, spent their first Christmas vacation together visiting both sets of parents, and have been attending the same church. They are at which stage of a relationship?

Integrating

Explanation:

The relationship is not so easy. It is a very complicated process of life. many of the psychologists called it a pigeon hole. Mark Knapp gives five stages of relationship development:

Integration: It is the fourth stage of the relationship. This is the stage when you like to each other most and ready to move on to the next stage. You both share your activities and friends. You start to share your stuff like who will pay the bill. This is the stage for couples  

Max and Andy both are on this stage called integrating into their relationships.