She left her iPad unlocked and needed to step out for a while. You grabbed it and went to browse for something. However... as you were typing Google showed some suggestions from previous searches...

Turns out she regularly visits some popular free sites with adult video clips and she has a penchant for... certain categories.

She wasn't necessarily "hiding" it from you but you've never seen her watch it while you're together.

How would this revelation make you feel?