Would this bother you ladies as well?

So a few months back I caught my husband messaging someone he went to high school with over snapchat. He claimed it was nothing and just catching up. I have a friend who knows this girl. She told me she is in an unhappy marriage and is a very flirty person. So it made me nervous. Well tonight I saw she sent him a video of short clips of random girls showing their boobs, and he saved it in the conversation so it doesnt disappear. I'm ready to lose my mind!!!! All I keep thinking is I wonder what was said before or after this video was sent to him. We also have a son who just turned 1 Monday. It kills me to see this. Would you ladys be mad? I dont even know what to say to him right now. What would you do???