When he’s not playing in the World Series, Alex Rodriguez has another favourite activity — and it involves girlfriend Kate Hudson.

“They love sex,” a source tells Us Weekly. “They talk about it all day. Kate gets graphic talking about his body, even to her parents.”

Meanwhile, Rodriguez’s friends insist the relationship is changing the Yankees slugger for the better. “He’s less of a jerk,” a pal jokes. “He’s also more free-spirited.”