  We investigate a marriage divorces problem via agent - based modeling.
Current value of socio-economic pressure p (main model parameter) drives the
dynamic of first marriage, remarriage or spontaneously marriage breaks up.
Model reflects the behavior of the heterosexual population (frequency of
changing partners, the ratio of singles in society). Theoretical agent-based
simulation (with population approaches, e. g. births and deaths) are
supplemented by historical values of divorces marriages in various countries of
the world from United Nation Registry and World Value Survey. In the model,
agents have a list of their attributes and preference of a potential partner
with Manhattan distance measure applied as a matching function. In the
deterministic part of the model randomly selected agents could entry into a new
relationship, or exchange partners, with respect to the matching distance and
pressure parameter. Spouses could also spontaneously fall apart with a pressure
depended probability. This simple model, although it assumes homogeneity of
agents (on bipartite graph), and has only one key parameter, gives estimate of
the socio-economic pressure values for different societies at given time point,
knowing the frequency of changing partners, the percentage of married in
society.
