I saw nudés of another girl in his mobile

So here's this guy. We used to get along well and he confessed he has feelings for me many times, I started to feel something too. But then today right now few minutes before I opened his insta and there were many girls added in it. I opened one of chat and scrolled reading there chats and there was pic of her naked showing her breasts and it was too with face. Then I scrolled more then I saw video of her removing clothes. Idk how to feel now. 🙂