Despite the impressive size of intra-European migration flows, to date they have received only limited scholarly attention in Belgium compared to the migration of non-Europeans, or third country nationals. After a well-attended conference on intra-European migration organised by CEMIS at the University of Antwerp in December 2013, the organisers decided to bundle all conference contributions in an edited book. This book, titled ‘Intra-Europese migratie en mobiliteit. Andere tijden, nieuwe wegen?’, has recently been published by Leuven University Press. In the second chapter, Helga de Valk (ID), Suzana Koelet (ID) and Rob Van der Erf (NIDI) sketch the demographic background of intra-European migration patterns and inter-European romantic relationships in a comparative perspective.