Reality TV star Kylie Jenner says she has been infatuated with everyone she has ever dated, but isn't sure whether she has ever really been in love.

The 17-year-old, who is rumoured to be dating 25-year-old rapper Tyga, was previously in a relationship with actor Jaden Smith.

"It's crazy, but every time I'm in a new relationship, I feel like, okay, this is definitely love. Then I get in my next relationship, and I'm like, no, this is it,` femalefirst.co.uk quoted Jenner as saying.

"I don't want to say (I've been in love) twice, but so far I've had two really strong infatuations,` she added.

The `Keeping Up with the Kardashians` star has never discussed her romance with `After Earth` star Jaden, 16, but told Cosmopolitan magazine that her "last relationship lasted almost three years."