Co Worker taking homeless women home and they live there….

Co worker is in his 50’s and apparently this is his 3rd or 4th homeless women he’s taken to live with him (I work in wireless) . They come in asking for help with their government phones or want cheap service which is why they come in. He has bragged about sleeping with them( he told me about the 1st I was told about the 3rd or 4th by someone he trusts) . He does help or try to get them on their feet but it gives me the ick that he’s doing this to them . The first one was in her mid 30s….