Just a few months after giving her a promise ring, Prince Jackson and his girlfriend Nikita Bess have split

The pair dated for 11 months prior to the breakup. According to someone close to the family, Michael Jackson’s son and his girlfriend, both 17, were constantly arguing towards the end of their relationship.

“Prince and Nikita had been arguing a lot lately and it just proved to be too much,” the insider explains.

MORE: See the Promise Ring Prince Gave Nikita

His grandparents Katherine and Joseph, who act as his legal guardians, were concerned the teen “was in way over his head with this girl” — but their romance ultimately came to an end because of his own concerns.

“Prince was starting to think that Nikita was only after him for his money, which is strange because she comes from money of her own,” the source tells Radar Online.