When Master first collared me, both He and i referred to me as submissive. Over time as W/we became more comfortable with one another, i began to think of myself as Master's slave and not His submissive. This was because my needs began to change. i began to need to submit in a deeper way.
With permission, i shared my feelings with Master. He already knew, He said he could tell by my actions, by the way i responded to instructions. i didn't know that it was so obvious, but as i thought about it, i realized that Master had already begun to respond to the changes in me. But He waited until i was ready to accept my new status. He wanted it to be my choice without any persuasion from Him.
So for U/us it was not a concious decision that i became a slave, it was simply a natural progression as O/our relationshoip grew and changed.
slave shaya