My friend has been taking photos and videos of my a** without me knowing... Don't really know what to do?

OK, so... I'm absolutely mortified with what I've found on my friends phone and I don't know how to handle it, its so f**king weird!

He's got several photos and videos of me doing yoga poses. A video of me walking up the stairs, zoomed right into my a**. I've found one of him zoomed right in when I've been riding (my horse) and all you can see is my a** going up and down in the saddle whilst I'm trotting as well as several photos of me bending over, like picking the horses hooves etc.

I've also found some videos of people I don't know and have never seen before at the gym, again zooming in on their a**es! Women walking up stairs etc. Seems to have an obsession with tight, figure hugging clothing!

Is this even legal? I know taking photos up skirts is illegal but I'm not so sure about this? Should I report this? Ignore it? Confront him? I don't feel comfortable being around him anymore!

My friend has been taking photos and videos of my a** without me knowing... Don't really know what to do?
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