Thanks for your comment Keirsten.
But I disagree. I have provided a lot of hard facts.
I too have been involved in fitness, my whole life.
I have dedicated hundreds of hours to learning about the science behind exercise and muscle gain.
The Rock is 100% on PEDs.
You cannot be more muscular at 50s then in your prime - assuming you're an experienced lifter at that point, which Dwayne obviously was, being a huge wrestler.
Essentially every star wrestler from that era has been implicated with steroid use.
The Rock is now bigger! Bigger!
His natural testosterone levels are likely to be 20-40% lower.
There's no way he can hold more muscle. It's science.
But, with PEDs, test levels are boosted massively, and then people can gain a lot more muscle.
If your boyfriend is anywhere near 260 pounds/120 kg, 10% bodyfat, then I'd be pretty suspicious of whether he's natural to be honest.
Cheers!