The hornet’s nest was kicked on Arnold Schwarzenegger ’s 78th birthday, causing some social media users to dredge up his adulterous past. “The Terminator” actor celebrated another year of life on July 30.

Well wishes from fans poured in across the web, including on Instagram, where his daughter, Katherine Schwarzenegger’s, heartfelt post doted on years of happy memories.

She shared a carousel of photos — one of her as a child as she and the former bodybuilder were horseback riding, another of her and the star in recent years, a happy family snapshot of the Hollywood A-lister with his daughter, his ex-wife Maria Shriver, and sons Patrick and Christopher Schwarzenegger, and more.

In the caption, she wrote, “Happy birthday daddy! King opa! We love you!” The comments prompted reactions such

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