Antonio Cromartie Pumped For Son's Commitment To Florida State, 'Surreal'

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Antonio Cromartie's son will follow in his father's footsteps and play defensive back at Florida State ... and Dad tells TMZ Sports he couldn't be happier about it!!

Antonio Cromartie Jr. -- a teenager who plays his high school ball at Carrollton H.S. in Georgia -- just committed to the Seminoles earlier this month ... and when we sat down with Sr. this week, the former NFL superstar called the whole thing "surreal."

antonio cromartie and son getty insta 1 Getty Composite

Cromartie Sr. -- who played for FSU in 2003 and 2004 -- said the offer from Florida State came from the Noles' coaching staff on Christmas ... and he said it was "better than any gift I could…