The 29-year-old singer told the Daily Record that the pair have been too busy to keep in touch since the show ended.
Lorenzo said: "He was such a flirt but I don't really think he is sexy. He has an interesting mind but I never thought he was good-looking. In fact, he is a bit old.
"He is a nice guy. He comes across on TV as being a lot rougher than he is. He is a little kitty cat really."
Lorenzo also confirmed that she had not rejected a record contract from the 49-year-old because none was offered.