Sometimes, due to the different circumstances or quality of the reactions provided and responses to the needs of the child, important role of the parents is replaced by other guardians or adoptive parents. Adoption leads to separation from the created figure of attachment and thus raises the question of the corelation of earlier negative experiences with new relationships (in the adoptive family, romantic relationships or relationships with one's own biological child). With the arrival of a child in an adoptive family, the most important task is to form a close relationship and develop attachment between parent and child. Close relationship between siblings can be an important social resource for adaption and formation of relationships with adoptive parents. By reaching adulthood, the experience of separating from the primary figure of attachment and impaired ability to trust together with the fear of re-abandonment can hinder a person from developing healthy and safe romantic relationships. Nevertheless, under the influence of positive experiences and relationships, the created patterns can be changed. After the realization of relations with adoptive parents and partners for some adult adoptees the arrival of a biological child into the world can arouse the need to seek a biological family, to rethink the past, parental possibilities and ways of upbringing. In conclusion, it is important to emphasize the role of social work in the adoption process and the creation of close relationships in which the social worker needs to monitor the adaptation and process of creating relationships and if necessary, can apply assistance techniques such as Theraplay.