Okay...

Mass Effect 1: No-one
Mass Effect 2: No-one
Mass Effect 3: No-one (my second playthrough of the series, I'm going to gay Kaiden up)

Dragon Age Origins: Alistair
Dragon Age II: Anders
Dragon Age Inquisition: Cullen, Dorian, Sera

Persona 3: Akihiko
Persona 4: Naoto
Persona Q: P4 Protagonist (in the blind date mini-game, there's no romance as such)