People are happiest when they are with their friends, and they have numerous health benefits on them, such as better dealing with problems and reducing stress. Close relations are characterized by long lasting voluntary relationships without social control. Close relations group consists of members who are highly emotionally connected. Members know they are a part of the group, even if they aren't together. Group dynamics consists of processes, activities and changes that happen within the group. The goal of this study was to research group dynamic of close relations on the example of American sitcom Friends. By showing the dynamics, Tuckman's phases of friendship development are presented, how he suggested them in 1965. Research included all 236 episodes of the series that aired between 1994. and 2004. The depiction of the development of the fictional group complies with the phases of the Tuckman's model. We considered the last phase friendship itself, and we analyzed it by roles of the characters and solutions to the problems depending who the actors had in mind when deciding on them. Tuckman didn't do an analysis of a close relationship group, and we considered appropriate to add two categories; joint activities and themes of interest. Joint activities are activities that members do together. Themes of interest served us to discover what similar situations did the analyzed group share. With solutions we saw what goals members had that were concerning the other members of the group.