He had commented on a hookup sub for the city he was visiting

My ex PA (26M at the time) was visiting a city for a Visa interview for a business school trip - with his other classmates. He was staying in a hotel room, together with other classmates. Around that time he was exhibiting ED & PE and also secretly taking pills to stay hard and hide it from me. But he was very loving and talking to me through that day as well.

I found his comment on a subReddit called “City-Hookups” - on a disgusting nude image of what looked like a sex worker (showing her boobs) with the caption “Do I deserve a creampie for this” : his comment was- “You deserve so much more hahah”

That’s all I found. No other comments etc. when I found this out, he did the classic PA stuff of first denying, then questioning what I know and how I found it, then saying he regrets it and is sorry and knows it’s so cringe and disgusting, then questioning me if I really think I was trying to get with her or anyone, then said “IT WAS JUST PORN”

Eventually he assured me that it was messed up but just porn. After he discarded me a year later, I discovered he is a porn addict and was sexting people etc.

MY QUESTION from others who have been through this: is there a high possibility he physically cheated on Me? Yes it makes a big difference for me. Do PAs go on such porn forums of places they’re in as it makes the fantasy more believable? Or was he really soliciting physical sex relations??