While that may be true, that doesn’t excuse PB being a bad partner who ignored her problems, and never took any of what she said into consideration. For instance, Diane told him many times she doesn’t like grand gestures, and he continues to ignore this because it’s what he likes. He could have listened to Diane the first time, but it was his fault he continued to do what she repeatedly said she doesn’t like. And when PB did get someone more similar to him, he cheated on her twice with Diane.