Well its impossible for me to tell you without his birthday but to give you a grasp on what his horoscope might be here are the dates.
March 21 -April 19 = Aries
April 20- May 20 = Tarus
May 21- June 20 = Gemini
June 21- July 22 = Cancer
July 23- August 22 = Leo
August 23- September 22 = Virgo
September 23 - October 22 = Libra
October 23- November 21 = Scorpio
November 22- December 21 = Sagittarius
December 22- January 19 = Capricorn
January 20- February 18 = Aquarius
February 19- March 20 = Pisces