The former Lothario, who married pop star Katy Perry in October, said that his fame made it all too easy for him to charm a lady into the bedroom.
He told The Sun, 'I was having sex with different women three, four, five times a day. In Ireland, nine in one evening.
'When you have sex that often, by a law of averages you're likely to have boring sex.
'My fame meant instead of taking someone for a date I was able to go, 'Let's do sex right now'.'
But the 35-year-old recently revealed that his womanising days are behind him and he plans to be a loyal and honest husband.