For some, age might be nothing more than a number but it doesn't look like everyone shares that same view in life. 25-year-old Tyga and 17-year-old Kylie Jenner are being criticized for their relationship as some are saying that the huge age gap between them is "not normal."

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According to Fox News on Tuesday, clinical psychologist Dr. Chloe Carmichael, who specializes in relationship issues, says that Kendall and Tyga have a very little chance of having a successful relationship as they aren't on the same level emotionally.

"Tyga is actually 50 percent older than Kylie, which makes a big difference in terms of development at the age of 17. Kylie is so young that her cerebral cortex is still forming- the cerebral cortex is what helps us to strategize, consider future consequences, and put emotions into context," Carmichael said. "It's unhealthy because Kylie is in a 'one down position' by dating a man whose brain and body are fully formed while she is literally still developing."

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Carmichael says that even though Kylie has been exposed to a very mature world, thanks to her older sisters in the Kardashian family, she's still very much a teenager trying to grow up too fast to keep up with everyone around her.

"She has grown up in a very adult world: nightclubs, tabloids, and observing seemingly endless relationship drama," she said. "It would probably be difficult for her to find someone her own age that could feel like a strong, manly romantic lead given her very adult-like teen experience so far."

While there has been a lot of speculation about their relationship, neither Tyga nor Kendall have officially confirmed that they are indeed dating. However, one of Tyga's recent Instagram posts seems to say otherwise.