Acclaimed fashion designer Marc Jacobs has ended his whirlwind six-month relationship with his 25-year-old toy boy, blaming their age gap. The 43-year-old clothes expert confesses he can't keep up with his lively partner, and they have few interests in common. Despite JASON PRESTON proving his devotion by having Jacob's logo tattooed on his arm, the catwalk guru has dumped the youngster, pointing his finger to Preston's immaturity. He says, "It's just not working. I have to be in bed at 11.30pm and he wants to go to clubs every night."