boyfriend shows me pics of him and other girls...

So I just started dating this guy (we’re in college). We’d been talking the past couple months but things just started to get serious the past couple weeks. He always calls other girls hot in front of me, which I dont mind, but this morning he just showed me a picture of him drunk making out with some girl he used to fuck around with last year and was like “look at this pic its so funny”. Am I crazy to be bothered by it? Especially cause shes still around our group of friends thats always together