If you pursue a role partially because it involves intimate scenes with an attractive actress, and you know she is underage, then yes you are a paedophile. And I wouldn't be surprised if he has slept with underage women before.

"She lied about her age," is typical victim blaming. Same as "She dressed like a 30 year old," or "She looked 21,".

The pertinent thing here is that he knew she was underage and pursued her for the role anyway.