My boyfriend (21M) has hundreds of pics of my dad on his laptop.

My bf and I have been together for a year. We live together and he has a couple of laptops - one of them is a personal one which I occasionally use.

A few days ago I opened his laptop which wasn’t shut down and it opened a photo album. My dad was on the thumbnail so I clicked on it. He had hundreds of photos of my dad. (For the record, my dad has lots of pics available online due to his profession, can’t elaborate further)

I asked my bf about it and he simply said that it’s for “research”. I asked him what he’s researching exactly and then he said that he can’t tell me because it’s “confidential”. I told him that it’s very bizarre and worrying that he has a ton of my dad’s pics on his personal laptop. He just gave me a weird smirk and said “whatever you think it is - it’s the opposite”.

I feel like I’m in the twilight zone or something. His complete nonchalance, the way he’s not even bothered how it comes across. We talked about it again and he said that he understands how I feel but shouldn’t be worried

I’m confused. This isn’t normal right