You believe that trust is first then love because you say, "In order to achieve love, you must have some level of trust first." How does a mother trust a newborn? How does a stranger who takes a personal sacrifice get their trust? If trust is the underpinning of love, and love is merely a higher order of trust, why do we see moments of no trust yet actions that are irrational to the model... In my opinion, the order matters because the order predicate everything else... Trust me, I know I'm going against the grain.
Clearly someone does not know about the pyramid of human emotional development. Trust is at a lower platform than love. Love is the apex. If you understand how scaffolding works, then my work is done. If scaffolding is foreign to you, then I'm done; go educate yourself.
Your confusion may be partly due to the fact that people in loving relationships take each other for granted, and this may lead to mistrust and resentment. Suffice to say that this pyramid is dynamic, fluid if you will, but in order to achieve love, you must have some level of trust first.
I'll add...why is it that after almost 100 years of psychology and sociology we don't feel better about each other. We live in a world of less trust, fake news, less love, in-authenticity, etc... Maybe the models are wrong. Would one say, the proof is in the pudding? Even if we say people are ignorant to the model, then why the change over time as these theory are diffuse by "thought leaders" to followers.
Btw, I'm not an expert or a researcher in this field of human emotional development. I only became interested in these concept through trying to understand myself and my relationships better. Lastly, do share your model by pasting a link.