Yeah, P4G easily became one of my favorite games of all-time when I was still not even half-way through it. I still gotta play Persona 3 FES' "The Answer" too, then I'll get started on P1 and P2 (and eventually Persona Q) as I wait for Persona 5.
Nah, I did Naoto once, did Marie twice, and did one playthrough where I flirted with all of them. That last playthrough...Valentines Day...holy shit, the guilt
I watched a video of Valentine's Day when you're with everyone. It was bad, lol. I went with Yukiko in my run. I loved how she announces her chocolate distribution.