How Loki actually dies in Infinity War

Red Skull: In order for you to get the soul stone you must sacrifice the one you love

Thanos to Gamora: I'm sorry little one

Thanos drags Gamora to the edge of the cliff. Gamora then transforms into Loki.

Thanos: What the fuck

Loki: Mblergh, it's me!

Loki stabs Thanos and falls to his death

A/N: 110% okay with this