Fifty women have told the BBC that they were pressured or coerced by their partners into participating in swinging, which involves having sex with other people. The women described feeling manipulated into a sexual activity they did not want. Swinging, often seen as a consensual lifestyle choice, involves couples exchanging partners for sex. However, the reports indicate a darker side, where partners push others into it against their will. The BBC's investigation found that these women felt their boundaries were ignored and that they were made to feel guilty for refusing. Some said they were threatened with the end of the relationship if they did not comply. Others reported being told that swinging would strengthen their bond, but instead felt degraded. The women come from various backgrounds and locations across the UK. The accounts raise questions about consent within relationships and the pressure that some individuals face to engage in non-monogamous activities. The BBC has not released further details about the women or their specific stories. The report highlights the need for better understanding of coercion in intimate relationships. An expert quoted in the article emphasized that genuine consent must be freely given without pressure. The women's experiences shed light on a problem that may be more common than previously recognized.