Who is Whip Logan from One of Those Hideous Books Where the Mother Dies and what is their importance?

Whip Logan is Ruby's famous movie star father. Everyone loves Whip, except for Ruby. Whip tries hard to form a relationship with his daughter. He was pushed out of her life by her mother before Ruby was born. Whip loves his daughter very much and is excited to finally become a part of her life. Whip is gay and lives with his boyfriend Max.