The biggest bachelor in the world may have relinquished his title!

Leonardo DiCaprio reportedly proposed to his girlfriend of four months, Kelly Rohrbach.

OK! magazine reports the 40-year-old actor popped the question to the 25-year-old model on Sept. 26 during an intimate dinner at an Italian restaurant on the Upper East Side in New York City.

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leonardo dicaprio and kelly rohrbach

An insider tells the mag, “It wasn’t planned,” adding, “It just happened. They were enjoying a bottle of red wine and engrossed in conversation as usual — it’s pretty obvious that they’re in love from the way they’re always touching and smiling.”

Though Leo is allegedly off the market, the couple is in no rush to get married. The source continues, “They’ve been discussing wedding plans. Nothing is set in stone.”

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kelly rohrbach

Kelly.

Hollywood’s lead hunk has had a string of beautiful girls on his arm for decades — including supermodels Bar Rafaeli, Erin Heatherton, Gisele Bundchen, and many others. So what makes this girl different than his other conquests?!

A source tells the mag, “Kelly’s incredibly smart, and she really understands Leo,” adding, “She shares his passion for tackling social issues like global warming and world poverty. They connect on an intellectual level, which is new for him. She’s much more than a pretty face.”