Found porn on my partners phone

The one time I go on his phone.. I find porn (I wasn't snooping.. I went to his gallery to save a picture). He always told me he wasn't into it, which was fine. I watch porn here and there. But the porn I found was a solo girl.. doing stuff to herself and it just breaks my heart seeing it. I want to bring it up because I'm really hurt. We've been together for 5 years.. and I'm shocked. What do I do? I feel like he's enjoying another woman.. not me.