
Of course we can rationalize via multiple theories and/or different potential scenarios where the President didn't fuck the actor; I too want to believe that he didn't because I'm a romantic purist, meaning, cheating in yaoi or any romance medium fucks with my mind badly, but there was nothing in the story that would substantiate our wishful thinking. It could be 50/50 either way, right? but which one is the more plausible one based on what we were given in the story? I would argue that the president fucked the actor, but again, I do acknowledge that there is a possibility he didn't, unfortunately we will never know :/

I agree, the story gives no hint that the president didn't sleep with the actor... and in fact, the moment before he asks the secretary to make the dinner reservations we see him looking at the secretary and the new guy talking and he looks peeved.. so I think he did it out of jealousy.. and I stopped liking him then, and I stopped liking the secretary when he was so guilt stricken he had slept with someone else when he believed the president did.. This manga took a nose dive for me then..
I'm surprised they didn't explain about the actor and him. Like, that's usually what happened but I guess not. :'))