Texting, flirting with your husband? Friends like that you can do without and you were correct to tackle her about it. Just carry on with your life, you don't need them. If your other friends in the group knew what she was doing, they should have said something re her and your husband. ( I also think I would have given my husband short shrift as well, unless he did not welcome the attention). I do alot of things alone, if I want to see a show I buy a ticket and go. See if you could perhaps join a keep-fit class or do a subject you enjoy. I don't think these friends were necessarily real friends. I certainly would not be messaging/flirting with anybody's husband, let alone my friends.