
The bottom/uke is a virgin. What the other user is talking in the comments is basically a lack of comprehension skills in regards to English.
When the bottom is saying that he was thinking of the top while doing it or dating others he simply refers to him masturbating and going on dates. He never slept with others since he has always been in love with the top. The Korean sentence makes it much more clear.

That's why I said "anymore". I have read around 2k manga on this site, not as many as you though. Plenty of the opposite dynamic nowadays. Which is as annoying as the promiscuous top x innocent bottom trope. I suppose it depends on the type of manga people seem to come across more or less than the other, Ig?

https://www.mangago.zone/read-manga/this_year_is_different/ This was the only one I found with experienced uke(probably).
The way this bl was drawn each panel feels like a movie scene