Velmi křehké vztahy (Very Fragile Relationships) is a Czech TV series Prima, which was broadcast in 2007–2009. It is a continuation of the series Rodinná pouta and falls into the soap opera genre. The main theme is love and relationships, but during the second series, the romantic scenes were reduced and the makers focused more on the crime plot and action scenes.

Velmi křehké vztahy aired from 2 January 2007 until then, the series carried the title Rodinná pouta. However, this naming was legally prohibited. The Family Ties dispute was a dispute between two production companies. The first two series of the series were produced by Pro TV, but the third was commissioned by Prima to Etamp. Pro TV didn't like that, so it asked the court for a preliminary injunction to ban the production. The series continued to be filmed, but already under the name Velmi křehké vztahy. The series has four seasons, the authors are the Bártů sisters.