I have always been fascinated by UFO's and "aliens" Never once did I think I'd actually see something.

In late summer, year 2021 I was living with my (then girlfriend) in a tall, multi story apartment complex (on the 8th floor)

Since summer nights in Sweden are usually pretty short (sun is up for most of the day) we were staying up vibing, looking at the sky. You could see the stars even tho the sun lit up the sky partially.

First... I see what I think is a satellite, and point towards it so my GF can see. Problem is, it's not moving in a straight line, it's zigzagging randomly, erratically (like a laser pointer) sometimes performing more fluid motions.

it's bright like a star but appeared bigger. We BOTH see it, perplexed. After watching it for a good 15-20 seconds, I try to get my camera up, it darts away (think lightspeed in Star wars)

I can see in my peripheral view how it darts back the other way, and my GF exclaims "there it is again".

So this was obviously something far more advanced than what we can make (as far as the public knows). It must have been FAIRLY close if we assume that it's the size of an aircraft..it couldn't have been outside or atmosphere (unless I'm dumb, please correct me) Still haunts me to this day, even if it's really cool.

Similar experiences?