Currently:

Relationships:
Magnus and Tristan - Tristan is living with Magnus.
Max and Ellysia - Max and Elle are dating. (Ellysia is a member of the Wicked Lovely RP)
Patrick and Seth - Patrick and Seth got married in November. (Seth is a member of the Wicked Lovely RP)
Risika and Keith - Risika and Keither are married and have a child together. (Keith is a member of the Push RP)
Jace and Gracie - Jace and Gracie are dating.

Humanities:
Shadowhunters: Jace, Alec, Clary, Isabelle, Ever
Werewolves: Maia, Tristan
Vampires: Raphael, Simon, Patrick
Warlocks: Magnus, Gracie, Justin