Leonardo DiCaprio & Blake Lively already having problems?

Leonardo DiCaprio‘s romance with Blake Lively is already on the rocks.

Sources say the couple have come to blows because Blake doesn’t like Leo’s wild ways.

“Leo is back in the States, and he’s going to go back to his old habits,” a source told America’s In Touch Weeklymagazine.

According to the publication, Leo’s habits include late nights out hitting clubs and parties.

“Blake doesn’t like to go out,” the insider says. “She’s never been into the party scene. She doesn’t like going out, dancing and loud music. She’d rather stay home.

“Blake can get really insecure out in public. It’s one of the main reasons she hates going out. Leo, on the other hand, loves to be out at night, and tends to hit clubs and parties almost every night.

“Blake and [her ex-boyfriend] Penn Badgely stayed in all the time. They watched movies and hung out in their pajamas all the time. Leo is definitely not going to be that guy.”