Nowadays, the notion of friendship has an ambivalent meaning, as seen though social online communities. The present work covers the online platform CouchSurfing.org with the help of qualitative research methods. Based on the principle of reciprocity, the platform establishes an international hospitality exchange network. Through such networks, the process of building up social relations, such as friendships, is speeded up. Previous work has failed to address the concepts behind maintaining such friendly connections in online networks. The use of quantitative data analysis does not provide enough depth to clarify those concepts. The social relations in such networks tend to build up fast. Does this lead to an alternation in the concept of friendship? Taking the grounded theory as its basis, an answer to this question is provided for the hospitality exchange network. The «mobilities paradigm» by John Urry proved to be useful for this research. The empirical material consists of nine narrative interviews and the travel experiences of the author. The elements that constitute hospitality exchange networks are covered in this work, such as the setting of trust and the importance part of choice. During a hospitality exchange, the intensive experiences lead to friendship, such relationships tend to be rather short and «fluid». This work shows that those relationships are of significance, once viewed from a network perspective. In the era of individualism, the notion of friendship is subject to change. It can be concluded that temporary, short-timed relationships are no longer excluded.