Robby's always been kinda square, never heard of him being handsy.
His ex-wife did accuse Arnold of being a titty bobbler though -
"The earliest incident of the six described to the Times was said to have occurred in 1975 at Gold's Gym near Venice Beach, Calif. E. Laine Stockton, then newly married to professional bodybuilder Robby Robinson, said she had come to the gym to watch her husband work out.
Stockton was 19 at the time. She said she was wearing slacks, tennis shoes and a loose-fitting T-shirt. She said she was not wearing a bra.
As she sat on an exercise bench, Stockton said, Schwarzenegger walked up behind her, reached his left hand under her T-shirt and touched her bare left breast.
"The gym is full of bodybuilders and Arnold comes and he gropes my breast -- actually touches my breast with his left hand," she said.
She said Schwarzenegger then walked away without comment."
Top middle here -
https://www.washingtonpost.com/archive/politics/2003/10/03/if-i-was-a-man-i-would-bust-your-jaw/6c3acaeb-cfb5-402d-8ce4-3b719f7dc2c9/ .