Well it was DeSantis that crapped on Trump. DeSantis was all for Trump enough to ask him for help when he needed it. That is until the the GOPe turned him into a tool against Trump.
Do some research. The feud between Trump and DeSantis started when Trump moved the 2020 RNC convention from Jacksonville, to North Carolina, instead.
DeSantis was supposed to have a starring role at the event in Florida, then when it was rescheduled, he was completely left out.