People date for months, and some eventually decide to move in together. While most people see this as a step forward in their relationship, their partner might not. For one person it is a commitment, but their partner might only see it as a convenience. This will cause problems for the couple when the truth comes out. The person who sees it as a commitment suddenly realizes their partner is really just seeking a roommate with inmate benefits, and this type of situation really hurts them. They must make the decision to stay with the status quo, or set out to find a new relationship.
Finding out a committed relationship is nothing more than a convenience can turn a person's world upside down. They may feel betrayed by their partner, or they might realize they simply ignored the signs. It does not matter what happened because the person now has an important decision to make. It will affect their entire future, and it must be the right decision for them instead of their partner.