I am a straight male in a long term relationship.

I accidently found out she watches gay porn when I was using her phone, I wasn’t looking for it or anything and she does not know that I know. I want to talk to her about it because I think it’s so hot, and I too watch gay porn and I would be good to all about it or watch it together. Should I even try talk to her about it or just pretend I don’t know?