Trust is a gift that must be earned (слэш)

“They knew how close we were. Your reaction was what sold the deceit. I knew if you were convinced I was dead, Dooku would believe it as well.”
Those words linger in Anakin Skywalkers' head in the following days after the Chancellor's attempted kidnapping. Being used in such a way, by Obi-Wan kenobi at that, leads him to make a drastic decision to ease the pain.
He cuts their bond, letting it vanish.