I feel bad for him in a way... super traumatizing upbringing coupled with widespread cyberfame at a very early age and in a sport much more dependent on aggression than bodybuilding. I don't predict particularly healthy or stable relationships for this guy in the future. Some also famous IG fitness thot seems like a horrible idea, too. Dude is very rich for his age and for doing 2 relatively obscure and non-mainsteam sports; you'd think he'd cash in on this fame and find himself a higher quality girl, but we were all young and stupid once and he'll need to go through a few bad ones and hopefully learn from it.
On the other hand, it was clear he wasn't going to stay with the original girlfriend... she's just not very attractive and he's frankly too rich and famous to be with a less than hot girl.
hope everything goes well for him, regardless.