With rising parental divorce and union instability, proportion of children growing up without their both biological parents increases continuously, and this could generate both weaker filial responsibilities and less actual support given to aging parents. Thus, divorced parents may become more vulnerable in their old age than those from intact families, and those affected the most are usually the fathers. Adopting a life-course perspective, this study aims to investigate how parental break up influences filial responsibility and helping behavior of adult offspring. Using Generations and Gender Surveys data from ten European countries (7 from Central and Eastern and 3 from Western Europe) we model the actual support given to fathers and to mothers taken separately. Our results show that norms of filial obligation weaken if children experience parental break up, while the helping behavior is affected in a more complex way. Only instrumental care to divorced aging fathers is negatively affected, but no other types of support toward them are diminished. On the contrary, we rather witness strengthening emotional ties with both divorced parents, and increased willingness to helping financially divorced mothers. Neither instrumental care for mothers nor financial help to fathers are affected by the parental divorce.