porn!

To start off I have no problem with men watching it. Doesn't affect me in anyway, me and my SO have been looking at new apartments and I went in my history in the browser to try and find the property to print out for its details, only to come across ALOT of porn to which I'm sat here thinking.. huh? It wouldn't bother me at all if it was one or two videos in the past 3 days but 30+ videos in 3 days isn't that a bit worrying, any advice in how to approach this to him or just let it go?  Thanks in advance:)