When a memory intrudes on you, persistently, you should consider it as a sign that there is something in that memory that needs to be dealt with.
Mostly wretchedness, I have found. But wretchedness not dealt with, not confronted, not looked straight in the eye, festers and like an undertow, runs your life.
My memory is an incident from 35 years ago.
I was in Germany, and this man treated me as special. I fell for it. I remember I was going to do anything for him, but he was more awake than myself, and he dumped me.