Of course you just made that one up! Cruz isn't that kind of guy. And even if he was, $500K would be peanuts in so far as Fiorina is concerned.
Not made up at all. Sorry to burst your bubble, sport...
https://www.washingtonpost.com/news/post-politics/wp/2015/07/31/why-did-a-ted-cruz-super-pac-donate-to-carly-fiorina/