Clint Eastwood ended his relationship with Sondra Locke primarily because of her ongoing marriage to her friend, Gordon Anderson, and the amount of attention she dedicated to him. Eastwood expressed feeling that Locke spent "98 to 100 per cent of her time coddling" Anderson, which he found tiresome.
Eastwood stated that he was "bored with it" and desired a "normal relationship in life." This sentiment indicates that he felt her marriage to Anderson, despite their unconventional arrangement, prevented the type of traditional partnership he sought. The acclaimed actor and director believed that Locke's deep involvement with her estranged husband significantly impacted their romantic connection, leading him to conclude the relationship.
For more details on their complex relationship, you can refer to articles such as Sondra Locke, Clint Eastwood and the tragic disappearance of a Hollywood career from The Independent.
