Want to clarify something 25, H does not talk to me about other women (before he left he told me he had been eyeing other women and it made him feel the R was in trouble and he told me frequently about other women coming on to him as a "cry for help"), but, since then if he mentions a woman, he will be sure to clarify that it is just a "friend" or he was with a group of people or...I would NOT listen to him talk about frolicking with women on an island or getting action so to speak. I would hang up or tell him to get out. He is a bit crass and has a juvenile sense of humor but he has made a concerted effort to avoid implying that there is/are other woman/women.
Mind you, I DON'T think this has anything to do with whether or not there is someone or more than one...it means, he doesn't want to be that guy, he doesn't want to see me hurt (in that way), and he doesn't want me assuming that he left because of someone else. But, I do think there is someone or more than one and I think he left partially because he felt he was going to be unfaithful (he told me that last part).
My main point is, I would/will not subject myself to that kind of information (the women he is having sex with etc.)...I have my limits.