Story highlights George W. Bush's spokesman isn't denying that the former president dislikes Sen. Ted Cruz

Bush's criticism of Cruz came at a private fundraiser and was reported by Politico

Washington (CNN) Former President George W. Bush said at a closed door fundraiser Sunday that he does "not like that guy," referring to Texas Sen. Ted Cruz, according to a Republican source who attended the fundraiser.

Bush isn't denying the account that he dislikes Cruz, who represents Bush's home state of Texas and is taking on his brother for the 2016 Republican presidential nomination.

Bush made his remarks a private fundraiser for former Florida Gov. Jeb Bush, Politico first reported

He called Cruz "opportunistic" for attempting to pair himself with Donald Trump in hopes of eventually winning Trump's supporters, according to the report.

A George W. Bush spokesman wouldn't comment on the specific remarks -- but said the 43rd president doesn't see Cruz as a threat to his brother.

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