Looking with my fiancé on his phone at things we like

My fiancé and I like to look at pics together on Instagram. He likes this girl who is called belle Delphine who’s like 18 and sells private Snapchat’s and whatnot he doesn’t pay for nudes supposedly. Well he double clicked on accident and I see where he was searching for her paetron or however you spell it so he could see her naked more. It’s.. one thing to like the girl and think she’s cute but another to try and pay for her nudes when he barely takes any of mine.. idk it makes me uncomfortable and he knows that. I’m pregnant and emotional but.. idk would I be wrong to feel sad about it and talk to him about it

I messaged him about it since he’s out right now. I hope this is the best response I could’ve sent.