Need serious insight before I loose my mind

I’ve been with my bf for more than 3 years. I’ve always known he likes to watch porn. I watch it myself but there are times that I see what he has been watching and I’m like wtf?? I need any type of insight, psychology analysis or just experienced the same. I just seen his recent watch was made videos of dick flashing!!! Im freaked out. Is he doing shit like that too??? Wtf what happened to normal porn?