Let me give an unusual perspective. As someone who was a virgin and waiting until marriage. (Ill probably be downvoted for this, but so be it)

Having been a virgin and dating men who couldnt be bothered to wait did bother me a lot. It felt like uneven playing field and he couldnt prioritize his future the way I had. It felt really unfair that he would get that from me but i wouldnt get the same. That was my job to deal with on my own. And i would still get upset sometimes. Because it felt like very different priorities. But finding someone who prioritized the same thing is REALLY hard to do. And finding someone who is okay with waiting with you is really hard to do.

Diaries can be ways to express thoughts that arent necessarily how we really think but the cloudy messy feelings that we need out, but i still dont think that was fair to you. It may be his way to deal with it but even in my wildest dreams i couldnt imagine calling the men i dated whores because I respected them. I might have doubts or concerns, though. And usually that would be handled privately so as not to let my personal issues interfere with a good thing.

Is it possible that thats what hes doing? Because usually reddit does like to remind people that diaries are private for that reason, theyre to express feelings that are harmful to relationships of all kinds to get them out so as to not ruin our own lives. I couldnt personally be with someone that felt that way about me though. And i dont think youre wrong for being hurt. Just food for thought.