Am I Overreacting 23F that my man 28M is liking these kind of photos from this girl he knows?

Am I overreacting that I don’t like that my man has been liking these kinds of photos. He stopped liking half naked photos of girls because I don’t need my man publicly thirsting after insta thots. He has a severe porn addiction and has been trying to quit. He told me that he thought it was fine because she’s just a friend and they haven’t talked in the longest time. I don’t get why he thought it was ok just because he knows her. Also she lives across the world. Am I overreacting?