ICT/mobile phone technology has an impact on the various spheres of society. Because these devices have become smaller and smaller and therefore easy to carry, new utilizations as well as new comportments have cropped up, such as a symbiotic relationship with the object, the development of multi-tasking, the interpenetration process that takes place between public, private and professional spheres ... Thus these phenomena can be studied from different perspectives. In this article, we will try to understand how ICT mobile phones－acting as object-mediators between social actors－question social relationships and participate in their dynamics. To do this, we will cross an object type (ICT mobile) and one type of relationship (the couple) all in a communicative context. This microsociological approach should allow us to answer the following question: how can the use of ICT mobile phones within the couple help us to examine the interactional process especially as it provides a new place to writing?