Pensacola, Florida (CNN) Donald Trump hinted Wednesday that his intensifying feud with rival Republican presidential hopeful Ted Cruz may spill over Thursday into the next Republican debate.

"I'm sure we'll get into it tomorrow night," Trump told a crowd of 11,000 supporters in Pensacola, Florida, as he brought up his war of words with the Texas senator, which has escalated in recent days.

Trump and Cruz had consistently embraced each other throughout the campaign and avoided attacking one another -- but all of that changed when Trump last week first suggested in an interview that Cruz's Canadian birth might make him ineligible to be president, or at least a liability to the Republican Party should he become the nominee.

After days of circling the pot, Cruz responded directly on Wednesday to Trump's questions about his natural born citizenship status, arguing that Trump only raised those concerns after falling behind the Texas senator in Iowa polls.

"You know it's interesting, this issue did not seem to concern Donald until a little over a week ago when suddenly he was trailing in the polls in Iowa," Cruz told reporters in South Carolina on Wednesday.

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