Lindsey Graham said that Donald Trump's tweets were like 'crack cocaine for this guy'

Lindsey Graham enjoyed the ride before his relationship with Donald Trump became public.

According to Mark Leibovich's new book "Thank You for Your Servitude: Donald Trump's Washington and the Price of Submission," Graham said that Trump was entertaining.

During an interview with Leibovich, Graham said that Trump is good for business.

He is good for business. What is going to happen in the future? Stay on top of the situation. Graham said that any tweets he sent was like crack cocaine for this guy.

Graham is fighting a subpoena from a Fulton County Grand Jury impaneled to investigate election interference after Trump called on Georgia's Secretary of State to find more than 11,000 votes for him.

Graham was accused of calling Raffensperger to encourage him to ask questions. Graham has described it as a fishing expedition.

Leibovich's book shows how Graham became an ally of Trump even though Graham had little regard for him.

Leibovich wrote that Graham "reserved a certain awe" for Trump and that he couldn't believe how Trump was able to survive crises and get away with them.