All he does is talk about other women

Guy I’ve been seeing for a while is making it very difficult to want to continue on with us. All he has done since day one is talk about other women whether it be girl friends, exes, or people he casually dated/hooked up with. Even had the nerve to tell me where in his apartment he had sex with a girl….How does he expect to want something serious if he’s not realizing he’s turning me off. Yes I could very well tell him to shut up and walk, but he’s also 30 years old…not my job to correct one’s poor behavior. I think I’m gonna leave, cuz clearly he isn’t that into me or whatever if he has other girls constantly occupying his mind and rather focus on the past.