You cannot find it on "official" ROM sites. You must join the Tokimeki Memorial Fan Discord (search Google for "Tokimeki Memorial Discord Server"—it is regularly re-linked on Reddit). Inside the Discord, pinned in the #tm4-translation channel, you will find a link to the patch file (a .xdelta patch) and the patching tool.
: Hacking the PlayStation Portable (PSP) files for this specific series is reportedly difficult, which has deterred several groups. Niche Interest : While the Girl's Side tokimeki memorial 4 english patch
If you are looking for a playable English experience in the franchise, other titles have completed patches: You cannot find it on "official" ROM sites
While Tokimeki Memorial 4 was a hit in Japan, international fans were left to wonder if they would ever get to experience the game in their native language. The game's developer, Konami, has not officially announced plans to release the game outside of Japan, leaving fans to rely on fan-made translations. : Hacking the PlayStation Portable (PSP) files for