It looks like not everyone is on board with Kylie Jenner's supposed romance with 25-year-old rapper Tyga. A new report says that older sister Kim Kardashian thinks her little sister is taking things way too fast as she thinks she should slow things down with her boyfriend.

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According to OK! Magazine on Friday, Kim is apparently concerned for Kylie and doesn't think she should rush into anything serious with Tyga, especially given their huge age gap.

A source close to the Kardashians told the site, "Kim has had her fair share of failed romances, after falling in love too quickly. So it makes sense that she would want Kylie to slow it down and make sure that this is what she wants to do."

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Apparently, there's also another reason why Kim is so concerned about Kylie and that involves her, as she allegedly doesn't want Kylie to steal her celebrity spotlight.

The insider explained, "Kim has serious rivalry issues with Kylie right now, but she still cares about her deeply and hates the sight of her youngest sister throwing her life away."

And if that weren't enough, it looks as though Kim is trying to get her family to help her talk some sense into the impressionably 17-year-old teenager.

The source added, Kim believes it's her duty to lead a family intervention. She's talking to her mom, Kourtney and even Bruce about when and where to stage it and has made it her mission to talk some sense into Kylie."

So far, neither Kim nor Kylie have made any comments about the report.

Tags: Kylie Jenner tyga