I do know a place where "infidelity on the part of one or both mates, homosexuality, behavioral problems, aggression, anxiety, depression, or suicidal tendencies" occur.
It is a group home where several thousand young single men live together communal style. The eat, sleep, work, and recreate in communal groups. They rarely mingle outside the communal group. They are deprived normal outlets for dating and closeness with the opposite sex. And the married members work apart from each other and are kept so busy that most of their time is apart from each other among the majority single members where they form alliances and relationships with the single people in there work group. This place is called "Bethel". It happens all the time. Humans, being human as they are.