Loki is an Avenger now, getting over being the villan and to be a good guy. But he has a secret, Loki is married. Loki is married to Jax, none of the Avengers know about her.

Loki called Jax to the compound so he wasn't alone as the others were on a mission, but the team came back Early.

Tony: Who are you?

Jax: Jax... Motherfucker Laufeyson

Thor: Loki don't have a sister...

Loki: wife actually...

Loki pulls Jax closer to him