What are the canon pairings in persona 4

None of the Persona games (5 at this point) have canon pairings. And, no, being of the "Lovers Arcana" does not mean that they are "the one", that's just a misconception that people who have only played P3 have. However, the games do have a love interest(s) that are more implied.

P1: no Lovers Arcana. Implied love-interest to be Maki (High Priestess).
P2 IS: Implied love-interest to be Maya (Moon).
P2 EP: no Lovers Arcana. Implied love-interest to be Tatsuya (Sun)
P3: anyone/everyone. Most implied to be Aigis (Aeon/Fool) & Yukari (Lovers).
P4: anyone. Most implied to be Yukiko (High Priestess).
P4U: Yu (P4 MC) looks like he chose no one & instead became friends with everyone.