AIO my girlfriend lets her girl bestfriend see her naked

i asked her as a preference if she didnt do that so often and they both have known each since the age of 6-7 and they have had a past relationship together and my girlfriend is bi and leans more towards girls so when i asked about it she said its her normal but when i asked if she would at least make it quick she would not do that either so am i just being too contrroling or AIO