Kylie Jenner has been rumoured to be dating rapper Tyga for several months and new reports this morning have claimed that the pair are about to tie the knot... despite the fact that she's only 17. The pair have denied they are in a relationship but have been inseperable in recent months, recently taking time out to volunteer at a homeless shelter together. According to Hollywood Life, Kylie is head over heels with her 25-year-old beau and has threatened to elope to Mexico without a pre-nup if Kris does not sign off on the marriage. “Kylie is not listening to anyone. Kris doesn’t agree with it, but she’s thinking about cosigning the marriage to save Kylie’s fortune,” said a source. Kylie wouldn't be the first in the family to marry young, with Kim Kardashian marrying first husband Damon Thomas in Vegas when she was just 19. Tyga has a two-year-old son son from his previous relationship with 27-year-old Blac Chyna.