Many people discover specific preferences without really knowing where they started — it often comes from early impressions, random experiences, or simply something that your mind connected with comfort or excitement over time. It doesn’t automatically say anything about your orientation; fantasies don’t always line up perfectly with labels.
If you ever want to explore things in a safe and relaxed way, it’s usually best to do it with someone who is open-minded and easy to communicate with. For example, in München there are ladies like Sofia, who is very chill and non-judgmental according to reviews — might be worth a look if you want a comfortable first step:
https://escortmunchen.com/madchen/sofia-1781
In any case, you’re definitely not the only one asking where certain fetishes come from. Human psychology can be pretty unpredictable that way.