Do you require your husband/wife to always ask your permission every time he goes out with friends esp when an ex-gf is in that circle too?

I do not think there is need to tell each and every thing to your partner, as sometimes it is best to leave things unspoken. If you think your partner will anyway would not come to know and your heart is clear, it is fine to go ahead and not to raise complications and useless questions. Needless to say that when ex is involved, your present partner would anyway will have so many thing racing through his/her mind. So, why get them involved!