But that’s kind of a stretch lmao. Unless they had a serious monogamous relationship then there’s no other way of confirming whether or not that’s actually his cum or not. But judging from his reaction, it probably was his.
if that IS the case, that is kinda prudish and double-standard ish.

He has been knowingly taking thirst traps for years, making sure he was shirtless when he did it.

and he gets upset about his load being shown??