According to the venerable Us Weekly, "Big Bang Theory" star Kaley Cuoco left hubby Ryan Sweeting because the tennis pro became addicted to pain killers following back surgery in 2014 -- and he supposedly "refused" to get help. Sad. I see what my mom has been going through following her spinal surgery in April and it's rough. Here's hoping he is able to turn things around. He was so handsome with his pornstache awhile back.