Donna Kelce knew her son Jason “wouldn’t make a good impression” on Taylor Swift. The Kelce family all became acquainted with pop megstar Taylor,34, when NFL player Travis, 34, started dating her last year but now matriarch Donna has admitted that when Jason’s wife Kylie told him to be on his best beahviour for their first meeting, that she always knew that “wasn’t going to happen”. At the time, Jason ripped his shirt off, let out a victorious yell and jumped out of the suite to celebrate one of his brother’s touchdowns at a game. Donna told People: “Jason’s his own man, as Travis is, and once…