JW only-Is virtual sex grounds for divorce?

Is he a witness as well? I wouldn't say it is grounds for divorce. He isn't physically cheating on her. Though it still isn't right and in my eyes, it isn't being faithful because he is living a double life. The only thing I can suggest is having both go to an elder and talk about their situation. If he isn't a witness, she should go to an elder and discuss this anyway.