Why did Richard I of England pay homage to Philip II Augustus?

Richard I of England paid homage to Philip II Augustus of France in November 1188 at Bonmoulins as a result of Philip's skillful exploitation of the estrangement between Richard and his father, King Henry II of England.1

At the time, the relationship between the English and French rulers was defined by significant tension, primarily due to the vast French territories held by the Angevin kings—which Philip II was eager to reclaim—and long-standing disputes over regions such as the Vexin, Berry, and Auvergne. By fostering the conflict between Henry II and his son, Philip successfully pressured Richard into performing this act of homage, which served to weaken Henry's position and further Philip's own territorial ambitions.12