Gender & sexuality are hardly ever static, even within the traditional binaries. As a person garners experiences, how they conceive their sense of self adapts to those experiences.
For example, once I started wearing dresses and skirts, my gender & sexuality both began to feel more powerful and flamboyant. The experience of filling my wardrobe with clothes meant for both traditional genders made it easier for me to interact with the world.
There is no way to measure what level of impact any one experience has over how I conceive my gender & sexuality. My daily wardrobe is just as important as my first experience being penetrated is just as important as my bisexual crushes in middle school.
The body of water gradually expands as I garner more experiences. There is no beginning nor end. These experiences flow over one another at random. Patterns align and then break. There are tides, hurricanes, ice bergs, and currents.
This is how the people from our past continue to be in our lives, regardless of context. Relationships do not begin and they do not end. They enter our rhizomes and traverse them like a molecule of water, leading to an ever increasing number of interactions.