The fellowships of Sex and Love Addicts Anonymous (SLAA) provide not only virtual and in-person meetings, but also Whatsapp groups for exactly this: peer support in time of need. https://slaavirtual.org/whatsapp/
In addition, if you join a meeting a couple times, chances are that you will get to know the fellows there and they will have a local, self-organized, non-public chat room as well.