TIFU by borrowing my own bicycle’s bell and lights without bringing its key

It sounds stupid, which can easily be blamed by the fact that it is in fact stupid.

I have a small collection of bicycles (restoration projects) locked up at a bicycle parking area by the train station. One of the bicycles I was working on at home lacked a bell and lights, so I decided to head to my other projects located in a bicycle parking lot by the train station to borrow these parts from a lesser condition bicycle of mine.

Here’s the problem.
A lot of bicycles get stolen in that area (just like anywhere else, this is the Netherlands after all), and some guy passing by asked me what I was doing when I was unscrewing the bell I needed.

I told him I was taking the bell from one of my projects to fix up another one of mine, but he decided that I was “trying to steal someone’s bicycle” instead. He asked if I had the key to said bicycle, which I thought I did, however I had apparently brought the wrong set of keys (I have several sets for different bicycles).

Since I couldn’t prove that the bicycle I was sourcing parts from was in fact mine, he told me he was going to call the police on me for theft. I told him I owned the bicycle and even pointed out that it was quite literally cable locked to two of the bicycles next to it, but that was apparently not enough to prove my point.

I very much suck at socialising and really wasn’t in the mood to spend my evening waiting for some random elderly man to call the police, waiting for the police to arrive and then having to explain to them that I own those three bicycles that were locked together (without the keys as proof).

I got stressed out, so got what I needed off of that bicycle, hopped back onto the bicycle I used to get there and just left. I know I didn’t do anything wrong and that the man was most likely not going to do anything anyways (he hadn’t called the police yet when I left), so I’m sure it’s all good, but yeah. It’s overall a shitty situation that simply doesn’t sit right with me.

TL;DR: I was taking parts from a project bicycle of mine (so that I could use these parts to fix another bicycle of mine) when some guy called me out for trying to “steal” said bicycle. I didn’t have the key for it with me at the moment so he threatened to call the police, so I just left.

I know I’ve done nothing wrong, but this still just sucks and doesn’t sit right with me at all.