Complex sentence: Gemma declares her love for Nero as Nero asks her what's going on just as Jax calls Nero asks him of Gemma's location, also telling him the truth of Tara's murder.
Split into simpler sentences: Gemma declares her love for Nero as Nero asks her what's going on just as Jax calls Nero. Jax asks him of Gemma's location and tells him the truth of Tara's murder.