Rapper Tyga's cheating scandal has only made his tumultuous relationship with reality TV star Kylie Jenner even more volatile.

The "Hookah" hitmaker broke down in tears because of his uncertainty over whether they'll make it for the long haul, reports radaronline.com.

As previously reported, this week's OK magazine exposed Tyga's flirty texts to an underage girl and now an insider has revealed that their relationship is hanging by a thread.

`He broke down in tears and begged Kylie to tell him the truth about where they stand... because he has no idea,` the source said.

`In the space of a week she's dumped him, got back with him, told the world they're getting married and then decided to 'cool things off' and threw him out of her house,` added the source.

The insider also claimed that the 26-year-old is "really, really scared" because the "Keeping Up with the Kardashians" star funds him and he "needs the cash bad".

`Some of his friends, including Blac Chyna, are convinced he's being toyed with for storylines on the show. He's in a whole world of paranoia right now, especially after hearing that her mom wants him out and has been showing her pictures of other guys to date," the insider added.